Double-mirror resonant cavity internal dispersion compensation and series frequency shift double-frequency generating method and device
A dispersion compensation, resonant cavity technology, applied in laser parts, electrical components, lasers, etc., can solve the problems of complex device structure, high cost, restricting development, etc., achieve simple cavity structure, high device stability, eliminate The effect of dispersion
Inactive Publication Date: 2016-08-31
HARBIN INST OF TECH
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However, the frequency consistency of the two femtosecond frequency comb systems in this method is limited by the precision of interlocking control. At the same time, the structure of the device is complex and the cost is high, which restricts the use of heterodyne dual optical frequency combs in the field of precision spectral analysis and absolute distance measurement. Further development of measurement methods
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[0024] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0025] A double-mirror resonant intracavity dispersion compensation and serial frequency shift dual-frequency comb generation device, in which an optical isolator 2 and an acousto-optic modulation frequency shifter A3 are sequentially arranged on the output optical path of a frequency-stabilized laser 1; Mirror A5 is configured on the +1-stage frequency-shifting diffraction optical path of the frequency converter A3, and a double-mirror resonant cavity A7 is configured on the reflected optical path of the reflective mirror A5. The double-mirror resonant cavity A7 is composed of a front cavity mirror a8, a rear cavity mirror a9 and The electro-optic modulator A13 is composed of a dispersion compensation device A15 inside the double-mirror resonator A7, and the reflected light of the mirror A5 passes through the front cavity mirror a8...
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Provided are a double-mirror resonant cavity internal dispersion compensation and series frequency shift double-frequency generating method and device, belonging to the ultrafast laser technical field. The method utilizes a frequency stabilized laser to provide source laser, generates a double optical frequency comb through two serially configured acousto-optic frequency shifters and two double-mirror resonant cavities having electrooptical modulators therein, utilizes an dispersion compensation device in a cavity to extend the spectrum range of the generated frequency comb, employs two dual channel signal generators based on a same frequency standard to respectively provide modulation driving signals for the acousto-optic frequency shifters and the electrooptical modulators, and obtains a heterodyning double optical frequency comb having each comb heterodyning interference signal frequency distributed in an arithmetic progression. The invention also provides a double-mirror resonant cavity internal dispersion compensation and series frequency shift double-frequency generating device. The heterodyning double optical frequency comb generated by the method possesses the characteristics of large spectrum range and sound frequency invariance; the heterodyning double optical frequency comb generating device has the advantages of high system integrated level, simple structure and low cost.
Description
technical field [0001] The invention belongs to ultrafast laser technology, and mainly relates to a heterodyne double optical frequency comb generation method and device based on double-mirror double-mirror resonator intracavity modulation and dispersion compensation and serial double acousto-optic frequency shifting. Background technique [0002] Because the optical frequency comb has the characteristics of ultra-short laser pulse sequence in the time domain and comb-shaped equal interval multi-spectrum in the frequency domain, it can be used in precision spectrum analysis, absolute distance measurement, laser wavelength calibration, time-frequency signal It has been widely used in transmission and other fields. [0003] In recent years, in the fields of precision spectral analysis and absolute distance measurement, measurement methods based on heterodyne dual optical frequency combs have been continuously developed, and have become important research directions in their re...
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IPC IPC(8): H01S3/106H01S3/083H01S3/00
CPCH01S3/1068H01S3/0085H01S3/083
Inventor 杨睿韬谭久彬
Owner HARBIN INST OF TECH