All-solid-state optical frequency comb system

An optical frequency comb, all-solid-state technology, applied in the field of optical frequency combs, can solve the problems that limit the wide application of Ti:sapphire optical frequency combs, phase noise control applications, and high cost of solid-state pump sources, and achieve low cost, low phase noise, and pulsed pulses. The effect of short pulse width

Inactive Publication Date: 2016-04-20
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the high cost and large size of the solid-state pump source greatly limit the wide application of Ti:Sapphire optical frequency combs.
In the past ten years, fiber optic frequency combs have also received extensive attention due to their advantages of good long-term stability and high reliability. However, their large phase noise restricts their application in the field of low-noise measurement.

Method used

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  • All-solid-state optical frequency comb system

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Embodiment 1

[0030] This embodiment provides an all-solid-state optical frequency comb system based on optical fiber light source pumping, its composition structure is as follows figure 1 shown, including:

[0031] Yb pumped by 976nm fiber laser 3+ : CaYAlO 4 (Ytterbium-doped yttrium-calcium aluminate) solid-state laser 01, the laser gain medium is bulk, the central wavelength of the output light is 1048nm, the typical output power is 250mW, and the pulse width of the output light is 57fs;

[0032] The supercontinuum generation part 02, which receives the output light of the solid-state laser 01, mainly includes a 1.3m-long photonic crystal fiber A, whose zero dispersion wavelength is 975nm, and a core diameter of 3.7 microns, preferably including the photonic crystal fiber A before The focusing lens L1 and the collimating lens L2 behind it, the output light of the solid-state laser is partially coupled into the photonic crystal fiber to generate a supercontinuum spectrum, wherein the sp...

Embodiment 2

[0037] This embodiment provides another all-solid-state optical frequency comb system based on optical fiber light source pumping. Its composition structure is similar to that of the all-solid-state optical frequency comb system in embodiment 1, except that Figure 4 The single-path structure shown in the figure sequentially includes: a dichroic mirror B, an optional first lens L3, a periodically poled lithium niobate crystal D, an optional second lens L4, and a half-wave plate along the direction of light propagation. E. Polarizing beam splitter F2 and avalanche photodiode G. The process of using a single optical path structure to generate carrier envelope phase shift is similar to that of a dual path structure, except that dichroic mirror B not only has a high transmittance to the long wavelength part (useful component is 1400nm), but also has a short wavelength ( The effective component is 700nm) and has a transmittance of about 5%. The long-wave component after the frequen...

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Abstract

The invention discloses an all-solid-state optical frequency comb system. The all-solid-state optical frequency comb system comprises an all-solid-state laser of an optical fiber light source pump, a supercontinuum generation part, an f-2f part and a circuit feedback system, wherein the all-solid-state laser is used as a light source of the whole all-solid-state optical frequency comb system; the supercontinuum generation part is used for receiving output light of the all-solid-state laser and generating a supercontinuum covering an octave; the f-2f part is used for receiving the output light generated by the supercontinuum generation part and generating a carrier-envelope phase-shift frequency signal; the circuit feedback system is used for feeding back the carrier-envelope phase-shift frequency signal generated by the f-2f part to the all-solid-state laser. The all-solid-state optical frequency comb system disclosed by the invention has the advantages of low cost and low phase noise; meanwhile, the all-solid-state optical frequency comb system has the characteristics of short pulse width, good supercontinuum coherence, flexible structure and the like; the all-solid-state optical frequency comb system is a novel optical frequency comb having great development potential.

Description

technical field [0001] The invention belongs to the field of optical frequency combs, in particular to an all-solid-state optical frequency comb system based on an optical fiber light source. Background technique [0002] Since the birth of the reference optical frequency comb in the late 1990s, revolutionary changes have taken place in the field of time-frequency measurement. Today, high-precision optical frequency combs have been widely used in molecular spectroscopy, astronomical spectroscopy, and attosecond optics. and many other fields. The wide range of application requirements has in turn promoted the development of different kinds of optical frequency combs. Among them, the titanium sapphire optical frequency comb based on solid-state pumping has the earliest development time, the best performance, and the most mature technology. However, the high cost and large volume of the solid-state pump source greatly limit the wide application of Ti:Sapphire optical frequenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/109
CPCH01S3/109
Inventor 魏志义于子蛟韩海年田文龙张金伟
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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