Broadband optical frequency comb and implement method thereof

An optical frequency comb and broadband technology, applied in the field of ultrafast optics, can solve the problems of high noise, low loss threshold of saturated absorber, and limited femtosecond optical frequency, etc., and achieve strong anti-interference ability, low mode-locking threshold, and adjustable The effect of many parameters

Active Publication Date: 2015-01-28
华东师范大学重庆研究院
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Problems solved by technology

They all have some defects: the mode-locking threshold of polarization rotation mode-locking is high, the mode-locked state is susceptible to external interference, the pulse has no long-term stability, and it is not easy to self-start mode-locked. Generated; Saturable absorption mode-locking can be self-started, but the pulse is easy to split, high noise, and the peak power of the pulse laser is high, while the loss threshold of the saturable absorber is low, which is not suitable for high power and long-term mode-locking state
In the above conventional active and passive mode-locking technologies, optical modulation is mode-locked ultrashort pulse spectral sidebands are often limited, and it is often necessary to use a subsequent complex spectral broadening system to detect the relevant error signal, so as to feedback lock the femtosecond optical frequency comb
These shortcomings limit the wider application of femtosecond optical frequency combs

Method used

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  • Broadband optical frequency comb and implement method thereof
  • Broadband optical frequency comb and implement method thereof
  • Broadband optical frequency comb and implement method thereof

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Embodiment 1

[0030] Embodiment one: if figure 1 , 2 As shown, this embodiment specifically relates to a broadband optical frequency comb based on single longitudinal mode narrow-linewidth continuous laser injection to lock the clockwise propagation of the light field in a closed-loop cavity and its implementation method. The optical frequency comb includes a continuous laser source 100, a pulse The generation module 200 and the amplification control module 300, the output end of the continuous laser source 100 is connected to the input end of the pulse generation module 200, and the output end of the pulse generation module 200 is connected to the input end of the pulse generation module 200 through the amplification control module 300 to form a closed-loop cavity.

[0031] Such as figure 1 , 2 As shown, the continuous laser source 100 outputs a stable single longitudinal mode narrow-linewidth continuous laser, and the working band is arbitrary; the pulse generation module 200 includes a...

Embodiment 2

[0036] Embodiment two: if figure 1 , 3 As shown, this embodiment specifically relates to a broadband optical frequency comb based on single longitudinal mode narrow-linewidth continuous laser injection locking the optical field propagating counterclockwise in a closed-loop cavity and its implementation method. The optical frequency comb includes a continuous laser source 100, a pulse The generation module 200 and the amplification control module 300, the output end of the continuous laser source 100 is connected to the input end of the pulse generation module 200, and the output end of the pulse generation module 200 is connected to the input end of the pulse generation module 200 through the amplification control module 300 to form a closed-loop cavity.

[0037] Such as figure 1 , 3 As shown, the continuous laser source 100 outputs a stable narrow-linewidth continuous laser, the working band is arbitrary, and at the same time can isolate the light field that propagates in t...

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Abstract

The invention discloses a broadband optical frequency comb and an implement method thereof. The broadband optical frequency comb is characterized by comprising a continuous laser source, a pulse generation module and an amplification control module, wherein the continuous laser source is connected to the input end of the pulse generation module, and the output end of the pulse generation module is connected to the input end of the pulse generation module by the amplification control module to form a closed loop cavity. The broadband optical frequency comb has the advantages that, laser is continuously injected based on single-longitudinal-mode narrow-linewidth, an F-P cavity-cavity enhanced structure is adopted, the pulse is repeatedly modulated, the spectrum can be effectively broadened, and thereby the broadband optical frequency comb can be directly expansively applied to the control technology of femtosecond optical frequency combs to obtain the stable broadband femtosecond optical frequency comb.

Description

technical field [0001] The invention belongs to the technical field of ultrafast optics, and in particular relates to a broadband optical frequency comb based on single longitudinal mode narrow-linewidth continuous laser injection locking and an implementation method thereof. Background technique [0002] The femtosecond optical frequency comb locks the repetition frequency and carrier envelope phase offset frequency of the femtosecond mode-locked laser, obtains a femtosecond pulsed laser with a stable repetition rate in the time domain, and obtains a laser frequency comb with a stable frequency interval in the frequency domain . As a bridge between microwave frequency and optical frequency, femtosecond optical frequency comb can realize direct and precise measurement of laser frequency. It has important applications in the field of optical precision measurement, such as precision spectrum measurement, and is one of the frontier directions in the field of optics today. At ...

Claims

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Application Information

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IPC IPC(8): H01S3/098H01S3/105H01S3/10H01S3/08
Inventor 李文雪王超曾和平
Owner 华东师范大学重庆研究院
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