An optical frequency comb automatic mode-locking control method and control system

An optical frequency comb and automatic mode locking technology, applied in lasers, laser parts, electrical components, etc., can solve the problems affecting the repetition frequency and the phase locking stability of the carrier envelope, the measurement accuracy of the optical comb system, and the repetition frequency phase inconsistency. Stability and other issues, to achieve the effect of being conducive to fast mold clamping and maintaining stable operation, improving stable control efficiency and shortening control time

Active Publication Date: 2021-01-15
CHONGQING INST OF EAST CHINA NORMAL UNIV +2
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Problems solved by technology

[0004] Although optical frequency combs are widely used in the field of optical frequency measurement, the debugging of optical comb mode-locked signals is a relatively complicated process, and its repetition frequency, line width of optical comb carrier envelope, and stability of mode-locked signals will all be affected by the pump. The influence of power and ambient temperature, for example, the fluctuation of pump power or ambient temperature makes the repetition frequency of the optical comb and the phase of the carrier envelope unstable, resulting in the loss of lock of the optical comb; and the operating temperature change caused by the heating of the pump source itself , will also affect the locking stability of the repetition rate and carrier envelope phase; these factors have led to a decrease in the measurement accuracy of the optical comb system

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  • An optical frequency comb automatic mode-locking control method and control system
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  • An optical frequency comb automatic mode-locking control method and control system

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Embodiment 1

[0078] In the scheme of this embodiment, a control strategy targeting high efficiency and energy saving is required for the dynamic adjustment control of the working power of the pump source. When the optical frequency comb is started, the temperature of the pump source itself is low, and the working environment temperature of the pump source may be lower or higher than the stable operating temperature, which will affect the mode-locking control of the optical frequency comb. It is necessary to adjust the pump source Work power to be balanced.

[0079] One of the available pump source working power adjustment strategies is to judge and control according to the mode-locked state of the optical frequency comb, and gradually increase the pump source working power when the lock is lost, and maintain the pump source until the optical comb is in the mode-locked state. Working power, but as the temperature of the pump source stabilizes and the temperature of the working environment c...

Embodiment 2

[0088] In the solution of this embodiment, a control strategy targeting high efficiency and stability is required for the dynamic regulation and control of the working environment temperature of the pump source. When the optical frequency comb is started, the temperature of the pump source itself is relatively low, and the working environment temperature of the pump source may be lower or higher than the stable operating temperature, which will affect the mode-locking control of the optical frequency comb. In addition to adjusting the pump source In addition to balancing the working power, the stable control of the working environment temperature of the pump source is also an important factor to ensure the fast mode-locking and stable operation of the optical frequency comb.

[0089] One of the available pump source working environment temperature adjustment strategies is to directly stabilize the temperature according to the mode-locked ambient temperature, because after the o...

Embodiment 3

[0104] In this embodiment, the optical frequency comb automatic mode-locking control system adopts the above-mentioned dynamic adjustment and control of the working power of the pump source in the first embodiment and the dynamic adjustment and control of the working environment temperature of the pump source in the second embodiment, although The dynamic adjustment and control processes of the two operate separately, but the two provide synergistic and combined assistance for the stable operation of the optical frequency comb.

[0105] When the optical frequency comb starts to operate, the temperature of the pump source itself is relatively low, and the working environment temperature of the pump source may be lower or higher than the stable operating temperature. Reach the reference ambient temperature required for mode-locking, creating good temperature conditions for the mode-locking of the optical comb system, and fast mode-locking can be achieved through the dynamic adjus...

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Abstract

The invention discloses an optical frequency comb automatic mode-locking control method and control system, which controls the working power of the pump source or / And the dynamic adjustment control of the working environment temperature of the pump source not only greatly shortens the control time for stable mode-locking, but also realizes fast mode-locking control, which makes the power control of stable operating conditions fast and stable, and reduces unnecessary power reciprocating oscillations The excess energy consumption caused by tracking control can better take into account the energy-saving effect of the power adjustment control process, which is conducive to better maintaining a stable operating condition of the optical comb system, and can also realize the mode-locking optimization control of the big data update method, effectively The mode-locking control process of the optical frequency comb system is improved to better ensure its operation stability and measurement accuracy.

Description

technical field [0001] The invention relates to the technical field of laser control, in particular to an optical frequency comb automatic mode-locking control method and an optical frequency comb automatic mode-locking control system. Background technique [0002] An optical frequency comb (OFC) refers to a spectrum composed of a series of frequency components that are evenly spaced and have a coherent and stable phase relationship on the spectrum. With the rapid development of optical communication technology, optical frequency combs have attracted more and more scholars' attention due to their wide application in the fields of optical arbitrary waveform generation, multi-wavelength ultrashort pulse generation and dense wavelength division multiplexing. [0003] Optical frequency combs have become another major breakthrough in the field of laser technology after the advent of ultrashort pulse lasers. In this field, two scientists, J. Hall and T. W. Hansch, won the Nobel P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/10H01S3/11
CPCH01S3/10084H01S3/1109H01S3/0912H01S3/10069H01S3/1106H01S3/1305H01S3/1307H01S3/1312
Inventor 曾和平李爽沈旭玲
Owner CHONGQING INST OF EAST CHINA NORMAL UNIV
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