Carrier envelope phase measuring device of ultrashort pulse sequence

Abstract

The utility model discloses a carrier envelope phase measuring device of an ultra-short pulse sequence, which comprises an ultra-short pulse light source, a beam splitting unit arranged on one side of the ultra-short pulse light source, a spectrograph arranged on one side of the beam splitting unit far away from the ultra-short pulse light source, a control unit arranged on one side of the beam splitting unit, and the spectrograph connected with the control unit. The control unit is connected with a piezoelectric transducer, and an interference adjusting unit is arranged on one side of the piezoelectric transducer. According to the utility model, high-precision measurement of the ultra-short pulse sequence CEP is realized, optical elements such as the beam splitter, the reflector and the piezoelectric converter are utilized, and the self-adaptive feedback control unit is combined, so that an optical path can be adjusted in real time to maintain the stability of interference fringes, and accurate phase information is obtained through the spectrograph and the CCD detector.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrafast laser and high-precision measuring device equipment, and particularly relates to a carrier envelope phase measuring device for an ultrashort pulse sequence. Background Art

[0002] Ultrashort pulse laser technology is a vital tool in fields such as precision measurement and spectral analysis. Stable control of the carrier envelope phase (CEP) is a key factor influencing overall system performance. Precise CEP control can significantly improve the accuracy of ultrafast observations and optical frequency standards.

[0003] Current CEP measurement technology mainly relies on nonlinear optical effects. The widely used CEP measurement method is based on f-2f interferometry, which detects CEP signals through a nonlinear process. Typically, ultrashort pulses must first undergo power amplification and spectral broadening before the CEP signal is extracted through self-referenced beat frequency. However, phase noise is inevitably introduced in this process, especially during power amplification and supercontinuum spectrum broadening. Nonlinear effects and external environmental interference further reduce the measurement accuracy of CEP. In addition, the f-2f interferometer has strict requirements on the spectral bandwidth, the system operation is complex, and it is easily affected by vibration and environmental noise, making it difficult to achieve high-precision real-time measurement over a wide spectral range. Therefore, there is an urgent need for a CEP measurement device that does not require bandwidth limitations, is easy to align and operate, and has noise reduction and vibration resistance designs to meet the needs of accurate measurement of ultrashort pulse sequences in the extreme wavelength range from ultraviolet to infrared. Utility Model Content

[0004] The purpose of the utility model is to provide a carrier envelope phase measurement device for an ultrashort pulse sequence, which can realize high-precision CEP measurement without bandwidth limitation.

[0005] The technical solution adopted by the utility model is a carrier envelope phase measurement device for an ultrashort pulse sequence, comprising an ultrashort pulse light source, a beam splitting unit provided on one side of the ultrashort pulse light source, a spectrometer provided on the side of the beam splitting unit away from the ultrashort pulse light source, a control unit provided on one side of the beam splitting unit, the spectrometer being connected to the control unit, the control unit being connected to a piezoelectric converter, and an interference adjustment unit provided on one side of the piezoelectric converter.

[0006] The utility model is also characterized in that:

[0007] The beam splitting unit includes a first beam splitter, which is arranged on one side of the ultrashort pulse light source. A second beam splitter, a third beam splitter and a fourth beam splitter are sequentially arranged on the side of the first beam splitter away from the ultrashort pulse light source. The fourth beam splitter is arranged close to the spectrometer. The ultrashort pulse light source, the first beam splitter, the second beam splitter, the third beam splitter, the fourth beam splitter and the spectrometer are arranged on the same straight line.

[0008] The first beam splitter, the second beam splitter, the third beam splitter and the fourth beam splitter are all tilted. The higher side of the first beam splitter is set close to the ultrashort pulse light source, the higher sides of the second beam splitter and the third beam splitter are set close to each other, and the higher side of the fourth beam splitter is set close to the spectrometer.

[0009] A reference light source is also provided directly above the fourth beam splitter, and the interference adjustment unit is provided below the second beam splitter and the third beam splitter.

[0010] The reference light source is set as a stable He-Ne laser.

[0011] The interference adjustment unit includes a first reflector, which is arranged below the second beam splitter. A second reflector is provided below the third beam splitter, which is arranged below the first reflector. The piezoelectric converter is arranged opposite to the first reflector and the second reflector.

[0012] The first reflector and the second reflector are both tilted. The tilt directions of the first reflector and the second beam splitter are consistent, and the tilt directions of the second reflector and the third beam splitter are opposite.

[0013] The control unit includes a CCD detector, which is arranged just above the first beam splitter. The spectrometer is connected to the CCD detector, which is connected to a controller through a pipeline, the controller is connected to a driver, and the driver is connected to the piezoelectric converter.

[0014] The beneficial effects of the utility model are:

[0015] This utility model's carrier envelope phase measurement device for ultrashort pulse sequences achieves high-precision measurement of the CEP of ultrashort pulse sequences. By utilizing optical components such as beam splitters, reflectors, and piezoelectric converters, combined with an adaptive feedback control unit, it can adjust the optical path in real time to maintain the stability of the interference fringes, and acquire accurate phase information through a spectrometer and CCD detector. It not only has a high response speed, capable of tracking CEP changes at a speed of 35kHz, but also adapts to ultrashort pulse sequences with different repetition frequencies and can maintain high measurement accuracy even with a small number of pulses. The entire device boasts the advantages of high stability, high precision, and strong real-time performance, and can be widely used for precision measurement and control in the field of ultrafast optics. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural block diagram of the carrier envelope phase measurement device for ultrashort pulse sequences of the present invention.

[0017] In the figure: 1. Ultrashort pulse light source, 2. CCD detector, 3. Reference light source, 41. First beam splitter, 42. Second beam splitter, 43. Third beam splitter, 44. Fourth beam splitter, 51. First reflector, 52. Second reflector, 6. Piezoelectric converter, 7. Spectrometer, 8. Controller, 9. Driver. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] The utility model provides a carrier envelope phase measurement device for ultrashort pulse sequences, such as Figure 1 As shown, the system includes an ultrashort pulse light source 1, with a beam splitter unit disposed on one side of the ultrashort pulse light source 1. A spectrometer 7 is disposed on the side of the beam splitter unit away from the ultrashort pulse light source 1. A control unit is disposed on one side of the beam splitter unit, and the spectrometer 7 is connected to the control unit. The control unit is connected to a piezoelectric converter 6, and an interference adjustment unit is disposed on one side of the piezoelectric converter 6. The ultrashort pulse light source 1 emits a pulse sequence, which is split into two paths by the beam splitter unit. One path reaches the spectrometer 7, which is used to analyze the phase information in the interference fringes.

[0020] Example 1

[0021] A carrier-envelope phase measurement device for an ultrashort pulse sequence includes an ultrashort pulse light source 1, a beam splitting unit is provided on one side of the ultrashort pulse light source 1, a spectrometer 7 is provided on the side of the beam splitting unit away from the ultrashort pulse light source 1, a control unit is provided on one side of the beam splitting unit, the spectrometer 7 is connected to the control unit, the control unit is connected to a piezoelectric converter 6, and an interference adjustment unit is provided on one side of the piezoelectric converter 6.

[0022] The beam splitting unit includes a first beam splitter 41, which is disposed on one side of the ultrashort pulse light source 1. A second beam splitter 42, a third beam splitter 43, and a fourth beam splitter 44 are sequentially disposed on the side of the first beam splitter 41 away from the ultrashort pulse light source 1. The fourth beam splitter 44 is disposed near the spectrometer 7. The ultrashort pulse light source 1, the first beam splitter 41, the second beam splitter 42, the third beam splitter 43, the fourth beam splitter 44, and the spectrometer 7 are disposed in a straight line. The ultrashort pulse light source 1 emits a pulse sequence, which is split by the first beam splitter 41. One path proceeds forward along the right main optical path, passing through the second beam splitter 42, the third beam splitter 43, and the fourth beam splitter 44 in sequence to reach the spectrometer 7, while the other path proceeds downward.

[0023] Example 2

[0024] A carrier-envelope phase measurement device for an ultrashort pulse sequence includes an ultrashort pulse light source 1, a beam splitting unit is provided on one side of the ultrashort pulse light source 1, a spectrometer 7 is provided on the side of the beam splitting unit away from the ultrashort pulse light source 1, a control unit is provided on one side of the beam splitting unit, the spectrometer 7 is connected to the control unit, the control unit is connected to a piezoelectric converter 6, and an interference adjustment unit is provided on one side of the piezoelectric converter 6.

[0025] The beam splitting unit includes a first beam splitter 41, which is arranged on one side of the ultrashort pulse light source 1. A second beam splitter 42, a third beam splitter 43 and a fourth beam splitter 44 are sequentially arranged on the side of the first beam splitter 41 away from the ultrashort pulse light source 1. The fourth beam splitter 44 is arranged close to the spectrometer 7. The ultrashort pulse light source 1, the first beam splitter 41, the second beam splitter 42, the third beam splitter 43, the fourth beam splitter 44 and the spectrometer 7 are arranged on the same straight line.

[0026] The first beam splitter 41, the second beam splitter 42, the third beam splitter 43, and the fourth beam splitter 44 are all arranged at an angle. The higher side of the first beam splitter 41 is arranged close to the ultrashort pulse light source 1, the higher sides of the second beam splitter 42 and the third beam splitter 43 are arranged close to each other, and the higher side of the fourth beam splitter 44 is arranged close to the spectrometer 7. The light rays split from the first beam splitter 41 reach the second beam splitter 42 in one direction to the right and in the other direction upward. The light rays reaching the third beam splitter 43 reach the right in one direction and in the other direction downward to the interference adjustment unit. The light rays reaching the fourth beam splitter 44 reach the spectrometer 7 in one direction to the right and in the other direction upward.

[0027] Example 3

[0028] A carrier-envelope phase measurement device for an ultrashort pulse sequence includes an ultrashort pulse light source 1, a beam splitting unit is provided on one side of the ultrashort pulse light source 1, a spectrometer 7 is provided on the side of the beam splitting unit away from the ultrashort pulse light source 1, a control unit is provided on one side of the beam splitting unit, the spectrometer 7 is connected to the control unit, the control unit is connected to a piezoelectric converter 6, and an interference adjustment unit is provided on one side of the piezoelectric converter 6.

[0029] The beam splitting unit includes a first beam splitter 41, which is arranged on one side of the ultrashort pulse light source 1. A second beam splitter 42, a third beam splitter 43 and a fourth beam splitter 44 are sequentially arranged on the side of the first beam splitter 41 away from the ultrashort pulse light source 1. The fourth beam splitter 44 is arranged close to the spectrometer 7. The ultrashort pulse light source 1, the first beam splitter 41, the second beam splitter 42, the third beam splitter 43, the fourth beam splitter 44 and the spectrometer 7 are arranged on the same straight line.

[0030] The first beam splitter 41, the second beam splitter 42, the third beam splitter 43, and the fourth beam splitter 44 are all tilted. The higher side of the first beam splitter 41 is set close to the ultrashort pulse light source 1, the higher sides of the second beam splitter 42 and the third beam splitter 43 are set close to each other, and the higher side of the fourth beam splitter 44 is set close to the spectrometer 7.

[0031] A reference light source 3 is further provided directly above the fourth beam splitter 44 , and the interference adjustment unit is provided below the second beam splitter 42 and the third beam splitter 43 .

[0032] The reference light source 3 is configured as a stable He-Ne laser. As a stable reference light source, the reference light source 3 is introduced into the interference light path via the fourth beam splitter 44, serving as a reference light source for reference light interference. The interference light is detected in the spectrometer 7, and the ultrashort pulse carrier envelope phase is measured through signal analysis. The light emitted by the reference light source 3 is split by the fourth beam splitter 44. One path goes leftward, passing through the third beam splitter 43, the second beam splitter 42, and the first beam splitter 41 in sequence. The other path goes downward. The light reaching the third beam splitter 43 goes leftward, and the other path goes upward. The light reaching the second beam splitter 42 goes downward to the interference adjustment unit. The other path goes leftward. The light reaching the first beam splitter 41 goes leftward, and the other path goes upward to the control unit.

[0033] Example 4

[0034] A carrier-envelope phase measurement device for an ultrashort pulse sequence includes an ultrashort pulse light source 1, a beam splitting unit is provided on one side of the ultrashort pulse light source 1, a spectrometer 7 is provided on the side of the beam splitting unit away from the ultrashort pulse light source 1, a control unit is provided on one side of the beam splitting unit, the spectrometer 7 is connected to the control unit, the control unit is connected to a piezoelectric converter 6, and an interference adjustment unit is provided on one side of the piezoelectric converter 6.

[0035] The beam splitting unit includes a first beam splitter 41, which is arranged on one side of the ultrashort pulse light source 1. A second beam splitter 42, a third beam splitter 43 and a fourth beam splitter 44 are sequentially arranged on the side of the first beam splitter 41 away from the ultrashort pulse light source 1. The fourth beam splitter 44 is arranged close to the spectrometer 7. The ultrashort pulse light source 1, the first beam splitter 41, the second beam splitter 42, the third beam splitter 43, the fourth beam splitter 44 and the spectrometer 7 are arranged on the same straight line.

[0036] The first beam splitter 41, the second beam splitter 42, the third beam splitter 43, and the fourth beam splitter 44 are all tilted. The higher side of the first beam splitter 41 is set close to the ultrashort pulse light source 1, the higher sides of the second beam splitter 42 and the third beam splitter 43 are set close to each other, and the higher side of the fourth beam splitter 44 is set close to the spectrometer 7.

[0037] A reference light source 3 is further provided directly above the fourth beam splitter 44 , and the interference adjustment unit is provided below the second beam splitter 42 and the third beam splitter 43 .

[0038] The reference light source 3 is set to be a stable He-Ne laser.

[0039] The interferometer adjustment unit includes a first reflector 51, which is disposed below the second beam splitter 42. A second reflector 52 is disposed below the third beam splitter 43, which is disposed below the first reflector 51. The piezoelectric converter 6 is disposed opposite the first reflector 51 and the second reflector 52. The first reflector 51 and the second reflector are used to reflect the signal light and the reference light.

[0040] Example 5

[0041] A carrier-envelope phase measurement device for an ultrashort pulse sequence includes an ultrashort pulse light source 1, a beam splitting unit is provided on one side of the ultrashort pulse light source 1, a spectrometer 7 is provided on the side of the beam splitting unit away from the ultrashort pulse light source 1, a control unit is provided on one side of the beam splitting unit, the spectrometer 7 is connected to the control unit, the control unit is connected to a piezoelectric converter 6, and an interference adjustment unit is provided on one side of the piezoelectric converter 6.

[0042] The beam splitting unit includes a first beam splitter 41, which is arranged on one side of the ultrashort pulse light source 1. A second beam splitter 42, a third beam splitter 43 and a fourth beam splitter 44 are sequentially arranged on the side of the first beam splitter 41 away from the ultrashort pulse light source 1. The fourth beam splitter 44 is arranged close to the spectrometer 7. The ultrashort pulse light source 1, the first beam splitter 41, the second beam splitter 42, the third beam splitter 43, the fourth beam splitter 44 and the spectrometer 7 are arranged on the same straight line.

[0043] The first beam splitter 41, the second beam splitter 42, the third beam splitter 43, and the fourth beam splitter 44 are all tilted. The higher side of the first beam splitter 41 is set close to the ultrashort pulse light source 1, the higher sides of the second beam splitter 42 and the third beam splitter 43 are set close to each other, and the higher side of the fourth beam splitter 44 is set close to the spectrometer 7.

[0044] A reference light source 3 is further provided directly above the fourth beam splitter 44 , and the interference adjustment unit is provided below the second beam splitter 42 and the third beam splitter 43 .

[0045] The reference light source 3 is set to be a stable He-Ne laser.

[0046] The interference adjustment unit includes a first reflector 51, which is arranged below the second beam splitter 42. A second reflector 52 is provided below the third beam splitter 43, and the second reflector 52 is arranged below the first reflector 51. The piezoelectric converter 6 is arranged opposite to the first reflector 51 and the second reflector 52.

[0047] The first reflector 51 and the second reflector 52 are both tilted. The first reflector 51 and the second beam splitter 42 are tilted in the same direction, while the second reflector 52 and the third beam splitter 43 are tilted in opposite directions. The reference light beam split from the second beam splitter 42 reaches the first reflector 51, is reflected by the piezoelectric converter 6, passes through the piezoelectric converter 6, reaches the second reflector 52, is reflected by the second reflector 52, and reaches the third beam splitter 43. The signal light beam split by the third beam splitter 43 reaches the second reflector 52, is reflected by the second reflector 52 to the piezoelectric converter 6, is reflected by the piezoelectric converter 6 to the first reflector 51, and then is reflected to the second beam splitter 42.

[0048] Example 6

[0049] A carrier-envelope phase measurement device for an ultrashort pulse sequence includes an ultrashort pulse light source 1, a beam splitting unit is provided on one side of the ultrashort pulse light source 1, a spectrometer 7 is provided on the side of the beam splitting unit away from the ultrashort pulse light source 1, a control unit is provided on one side of the beam splitting unit, the spectrometer 7 is connected to the control unit, the control unit is connected to a piezoelectric converter 6, and an interference adjustment unit is provided on one side of the piezoelectric converter 6.

[0050] The beam splitting unit includes a first beam splitter 41, which is arranged on one side of the ultrashort pulse light source 1. A second beam splitter 42, a third beam splitter 43 and a fourth beam splitter 44 are sequentially arranged on the side of the first beam splitter 41 away from the ultrashort pulse light source 1. The fourth beam splitter 44 is arranged close to the spectrometer 7. The ultrashort pulse light source 1, the first beam splitter 41, the second beam splitter 42, the third beam splitter 43, the fourth beam splitter 44 and the spectrometer 7 are arranged on the same straight line.

[0051] The first beam splitter 41, the second beam splitter 42, the third beam splitter 43, and the fourth beam splitter 44 are all tilted. The higher side of the first beam splitter 41 is set close to the ultrashort pulse light source 1, the higher sides of the second beam splitter 42 and the third beam splitter 43 are set close to each other, and the higher side of the fourth beam splitter 44 is set close to the spectrometer 7.

[0052] A reference light source 3 is further provided directly above the fourth beam splitter 44 , and the interference adjustment unit is provided below the second beam splitter 42 and the third beam splitter 43 .

[0053] The reference light source 3 is set to be a stable He-Ne laser.

[0054] The interference adjustment unit includes a first reflector 51, which is arranged below the second beam splitter 42. A second reflector 52 is provided below the third beam splitter 43, and the second reflector 52 is arranged below the first reflector 51. The piezoelectric converter 6 is arranged opposite to the first reflector 51 and the second reflector 52.

[0055] The first reflecting mirror 51 and the second reflecting mirror 52 are both tilted. The tilt directions of the first reflecting mirror 51 and the second beam splitter 42 are consistent, and the tilt directions of the second reflecting mirror 52 and the third beam splitter 43 are opposite.

[0056] The control unit includes a CCD detector 2, which is located directly above the first beam splitter 41. A spectrometer 7 is connected to the CCD detector 2, which is connected to a controller 8 via a pipeline. The controller 8 is connected to a driver 9, which is connected to a piezoelectric converter 6. The signal light and reference light are combined at the second beam splitter and transmitted to the CCD detector 2, which performs real-time detection and transmits the information to the controller 8 for analysis. The controller 8 calculates the phase amount that needs to be adjusted based on the phase error and instructs the driver 9 to drive the piezoelectric converter 6 to dynamically adjust the beam phase.

[0057] Example 7

[0058] The ultrashort pulse light source 1 generates weak light pulses with a pulse width of 25 femtoseconds, a frequency range of 68MHz-90MHz, and a minimum pulse number of less than 3. After passing through the first beam splitter 41, the incident light is split into two paths. After passing through the second beam splitter 42, the signal light propagates along the optical path, then passes through the second reflector 52, the piezoelectric converter 6, and then to the first reflector 51, and finally returns to the second beam splitter 42; the reference light passes through the first reflector 51, passes through the piezoelectric converter 6, and then reaches the second reflector 52, forming interference with the signal light. During the interference process, the carrier envelope phase is calculated based on the optical path difference and phase relationship of the two light paths: ,in is the optical path difference between the signal light and the reference light, is the wavelength of light. After the signal light and the reference light undergo phase interference, the interference pattern is recorded by the CCD detector 2 and transmitted to the controller 8 for processing. The controller 8 calculates the adjustment parameters based on the phase error and controls the piezoelectric converter 6 through the driver 9 to change its thickness or displacement, thereby adjusting the optical path difference between the signal light and the reference light. The feedback control process can be described by the following formula: ,in The adaptive feedback system adjusts the optical path difference through the piezoelectric converter to ensure phase accuracy.

[0059] The working principle of the carrier envelope phase measurement device of the ultrashort pulse sequence of the utility model is as follows:

[0060] The light pulse emitted by the ultrashort pulse light source 1 is divided into two optical paths after reaching the first beam splitter 41. The reference light source 3 is introduced into linear interference through the fourth beam splitter 44. After the signal light is split by the first beam splitter 41, it enters the second beam splitter 42 along the right optical path, where part of the light beam is reflected and part continues to propagate forward along the main optical path. The signal light that continues to move forward reaches the third beam splitter 43, where it is reflected downward again and enters the second reflector 52. The signal light beam reflected from the second reflector 52 enters the piezoelectric converter 6 for phase adjustment; the reference light is reflected to the first reflector 51 after passing through the second beam splitter 42, and the light beam reflected from the first reflector 51 is phase adjusted by the piezoelectric converter 6. Subsequently, the light beam enters the second reflector 52, and after reflection, it returns to the second beam splitter 42 through the third beam splitter 43, and finally merges with the signal light to form an interference signal. The interfered light beam is transmitted to the CCD detector 2 through the first beam splitter 41, which performs real-time detection and transmits it to the controller 8 for analysis. The controller 8 calculates the phase amount that needs to be adjusted based on the phase error, and instructs the driver 9 to drive the piezoelectric converter 6 to dynamically adjust the light beam phase in real time.

[0061] This new device for measuring the carrier envelope phase (CEP) of ultrashort pulse trains achieves high-precision measurement of the CEP of ultrashort pulse trains. The system utilizes optical components such as beam splitters, mirrors, and piezoelectric converters, combined with an adaptive feedback control unit. This system adjusts the optical path in real time to maintain the stability of the interference fringes, and acquires precise phase information through a spectrometer and CCD detector.

Claims

1. A carrier envelope phase measurement device for an ultrashort pulse sequence, characterized in that: The invention comprises an ultrashort pulse light source (1), wherein a beam splitting unit is provided on one side of the ultrashort pulse light source (1), a spectrometer (7) is provided on a side of the beam splitting unit away from the ultrashort pulse light source (1), a control unit is provided on one side of the beam splitting unit, the spectrometer (7) is connected to the control unit, the control unit is connected to a piezoelectric converter (6), and an interference adjustment unit is provided on one side of the piezoelectric converter (6).

2. The carrier envelope phase measurement device for an ultrashort pulse sequence according to claim 1, characterized in that: The beam splitting unit includes a first beam splitter (41), the first beam splitter (41) is arranged on one side of the ultrashort pulse light source (1), a second beam splitter (42), a third beam splitter (43) and a fourth beam splitter (44) are sequentially arranged on the side of the first beam splitter (41) away from the ultrashort pulse light source (1), the fourth beam splitter (44) is arranged close to the spectrometer (7), and the ultrashort pulse light source (1), the first beam splitter (41), the second beam splitter (42), the third beam splitter (43), the fourth beam splitter (44) and the spectrometer (7) are arranged on the same straight line.

3. The carrier envelope phase measurement device for an ultrashort pulse sequence according to claim 2, characterized in that: The first beam splitter (41), the second beam splitter (42), the third beam splitter (43), and the fourth beam splitter (44) are all arranged at an angle. The higher side of the first beam splitter (41) is arranged close to the ultrashort pulse light source (1), the higher sides of the second beam splitter (42) and the third beam splitter (43) are arranged close to each other, and the higher side of the fourth beam splitter (44) is arranged close to the spectrometer (7).

4. The carrier envelope phase measurement device for an ultrashort pulse sequence according to claim 3, characterized in that: A reference light source (3) is also provided directly above the fourth beam splitter (44), and an interference adjustment unit is provided below the second beam splitter (42) and the third beam splitter (43).

5. The carrier envelope phase measurement device for an ultrashort pulse sequence according to claim 4, characterized in that: The reference light source (3) is configured as a stable He-Ne laser.

6. The carrier envelope phase measurement device for an ultrashort pulse sequence according to claim 4, characterized in that: The interference adjustment unit includes a first reflector (51), the first reflector (51) is arranged below the second beam splitter (42), a second reflector (52) is provided below the third beam splitter (43), the second reflector (52) is arranged below the first reflector (51), and the piezoelectric converter (6) is arranged relative to the first reflector (51) and the second reflector (52).

7. The carrier envelope phase measurement device for an ultrashort pulse sequence according to claim 6, characterized in that: The first reflector (51) and the second reflector (52) are both tilted, the tilt directions of the first reflector (51) and the second beam splitter (42) are consistent, and the tilt directions of the second reflector (52) and the third beam splitter (43) are opposite.

8. The carrier envelope phase measurement device for an ultrashort pulse sequence according to claim 7, characterized in that: The control unit includes a CCD detector (2), the CCD detector (2) is arranged directly above the first beam splitter (41), the spectrometer (7) is connected to the CCD detector (2), the CCD detector (2) is connected to a controller (8) via a pipeline, the controller (8) is connected to a driver (9), and the driver (9) is connected to the piezoelectric converter (6).

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