A method for generating mid-infrared supercontinuum directly in amplifiers
An amplifier and continuum technology, applied in the field of laser optoelectronics, can solve the problems of low conversion efficiency and low output power, and achieve the effect of improving the light-to-light conversion efficiency
An amplifier and continuum technology, applied in the field of laser optoelectronics, can solve the problems of low conversion efficiency and low output power, and achieve the effect of improving the light-to-light conversion efficiency
CN103151687BActive Publication Date: 2015-08-19NAT UNIV OF DEFENSE TECH
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[0016] figure 1 It is a schematic flow chart of the method for producing a mid-infrared supercontinuum light source in an amplifier of the present invention;
[0017] The present invention comprises the following steps:
[0018] Step S1, build as figure 2 The shown mid-infrared supercontinuum light source generation system;
[0019] Step S2, using the seed amplifier 2 to amplify the power of the output light (called seed light) of the pulsed seed light source 1 to generate a signal laser with a power of several hundred mW;
[0020] In step S3, the signal laser output from the seed amplifier 2 and the output laser from the pump light source 3 are combined by the beam combiner 4 and simultaneously incident into the gain fiber 5 to obtain the output of the mid-infrared supercontinuum light source.
[0021] figure 2 Schematic diagram of the structure of the mid-infrared supercontinuum generation system constructed for the first step of the present invention.
[0022] The la...
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The invention discloses a method for directly generating intermediate infrared super-continuum spectrum in an amplifier and aims to solve the problem that an existing intermediate infrared super-continuum spectrum optical fiber laser is low in output power and conversion efficiency. The technical scheme includes that an intermediate infrared super-continuum spectrum generation system, consisting of a pulse seed light source, a seed amplifier and a super-continuum spectrum amplifier, is firstly built; and the super-continuum spectrum amplifier consists of a pump light source, a combiner and a gain optical fiber. The power of the output light, namely the seed light, of the pulse seed light source is amplified by using the seed amplifier to generate signal laser; the signal laser and the output laser of the pump light source are combined by using the combiner to enter the gain optical fiber, so that the light source output of the intermediate infrared super-continuum spectrum is obtained. With the adoption of the method for directly generating intermediate infrared super-continuum spectrum in the amplifier, the limitation of core diameter on the output power of the super-continuum spectrum is broken through, the light-to-light, namely from semiconductor pump light to super-continuum spectrum, conversion efficiency is greatly improved, and the output of an intermediate infrared super-continuum spectrum light source with high power and high conversion efficiency is realized.
Description
technical field [0001] The invention belongs to the technical field of laser optoelectronics, in particular to a method for directly generating mid-infrared supercontinuum in an amplifier. Background technique [0002] The broadband continuum produced by the narrowband pulse in the medium due to the extreme nonlinear spectral broadening effect is called supercontinuum (Supercontinuum). Supercontinuum light sources have the advantages of wide spectral range and good coherence, and have important applications in the fields of biomedicine, nonlinear spectroscopy, optical coherence tomography, and optical frequency metrology. Nowadays, photonic crystal fibers can be used to realize supercontinuum light sources whose spectral range covers the visible to near-infrared bands. Denmark’s NKT Photonics Company and Wuhan Anyon Laser Technology Co., Ltd. have commercially available supercontinuum light source products, and the output spectral range can cover 400. -2400nm, the maximum o...
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Patent Timeline
19 Aug 2015
Publication
CN103151687B
- IPC
- H01S3/067; G02F1/39; G02B6/036
- Inventors
- 侯静; 张斌