Band selection device for femtosecond laser output by optical frequency comb
An optical frequency comb and femtosecond laser technology, which is applied in the field of femtosecond laser band selection, can solve the problems of light intensity attenuation, high technical cost, and inflexible band selection.
Active Publication Date: 2011-12-07
SHANXI UNIV
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Problems solved by technology
[0004] In order to solve the problems that the existing femtosecond laser band selection technology is expensive, the band selection is inflexible, and it is easy to cause additional attenuation to the light intensity of the laser in the required band, the present invention provides a femtosecond laser for optical frequency comb output. Laser band selection device
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[0010] The band selection device for the femtosecond laser output by the optical frequency comb, including the polarization beam splitting prism PBS, the reflection grating G, the lens group, the bilateral independent fine-tuning diaphragm, the optical fiber X, and the spectrometer SM; the incidence of the polarization beam splitting prism PBS The end is provided with the optical path formed by the first total reflection mirror M1, the second total reflection mirror M2, and the first half of the glass slide P1; There is an optical path formed by sequentially connecting the first quarter glass slide P2 and the third total reflection mirror M3; the lens group includes the first convex lens L1, the second convex lens L2, and the third convex lens L3; wherein, the first A convex lens L1 is arranged at the outgoing end of the reflective grating G, the outgoing end of the third convex lens L3 is coupled with the incident end of the spectrometer SM through the optical fiber X, the sec...
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The invention relates to femtosecond laser band selection technology, in particular to a band selection device for femtosecond laser output by an optical frequency comb. The device solves the problems that the conventional femtosecond laser band selection technology has high cost and inflexible band selection and is easy to cause additional attenuation on the light intensity of the laser of the required band. The band selection device for the femtosecond laser output by the optical frequency comb comprises a polarizing beam-splitting prism, a reflection grating, a laser set, a double-side independent fine tuning grating, a fiber and a spectrometer. The device effectively solves the problems that the conventional femtosecond laser band selection technology has high cost and inflexible bandselection and is easy to cause additional attenuation on the light intensity of the laser of the required band. Narrow band femtosecond laser with precision of 1 nanometer can be acquired by adoptingthe band selection device for the femtosecond laser output by the optical frequency comb.
Description
technical field [0001] The invention relates to femtosecond laser band selection technology, in particular to a band selection device for femtosecond laser output from an optical frequency comb. Background technique [0002] The femtosecond optical frequency comb is a bridge connecting the precise control of the time domain and the frequency domain of the optical field. The successful development of femtosecond optical frequency combs is the development of research on important basic scientific issues such as precision spectroscopy, ultrashort pulse coherence control, and optical clocks, as well as the precise measurement of some fundamental physical constants and the exploration of whether certain physical constants change with time. Bring about a major revolutionary breakthrough. Femtosecond optical frequency combs can output femtosecond ultra-narrow optical pulses with very high stability, and have become an indispensable scientific research tool in the fields of precisi...
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IPC IPC(8): H01S3/1055
Inventor 马杰李玉清张一驰武寄洲肖连团贾锁堂
Owner SHANXI UNIV