A Broadband Optical Frequency Comb and Its Realization Method

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

Active Publication Date: 2017-06-16
CHONGQING HUAPU INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A Broadband Optical Frequency Comb and Its Realization Method
  • A Broadband Optical Frequency Comb and Its Realization Method
  • A Broadband Optical Frequency Comb and Its Realization Method

Examples

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Embodiment 1

[0030] Example one: such as figure 1 , 2 As shown, this embodiment specifically relates to a broadband optical frequency comb based on a single longitudinal mode narrow linewidth continuous laser injection locking the optical field clockwise in a closed loop cavity and its realization method. The optical frequency comb includes a continuous laser source 100, pulses The output terminal of the continuous laser source 100 is connected to the input terminal of the pulse generating module 200, and the output terminal of the pulse generating module 200 is connected to the input terminal of the pulse generating 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 with any working wavelength; the pulse generation module 200 includes a beam combiner 201, a spatial collimator 202, an FP cavity mirror 203, and a ph...

Embodiment 2

[0036] Embodiment two: such as figure 1 , 3 As shown, this embodiment specifically relates to a broadband optical frequency comb based on a single longitudinal mode narrow linewidth continuous laser injection-locked closed-loop optical field propagating counterclockwise and an implementation method thereof. The optical frequency comb includes a continuous laser source 100, pulses The output terminal of the continuous laser source 100 is connected to the input terminal of the pulse generating module 200, and the output terminal of the pulse generating module 200 is connected to the input terminal of the pulse generating 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 with any working waveband and can isolate the light field propagating in the reverse direction; the pulse generation module 200 includes a beam combiner 201, a ...

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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 specifically 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 of the femtosecond mode-locked laser and the carrier envelope phase offset frequency to obtain a femtosecond pulse laser with stable repetition frequency in the time domain, and a laser frequency comb with 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. At the same time, as a special laser light source that is different from traditional continuous wave frequency stabilization laser, it is used in laser frequency ruler and absolute distance measurem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/098H01S3/105H01S3/10H01S3/08
Inventor 李文雪王超曾和平
Owner CHONGQING HUAPU INFORMATION TECH CO LTD
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