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Infrared laser in ultra quantum conversion limit based on optic superlattice and construction method thereof

A technology of optical superlattice and construction method, which is applied in the field of nonlinear frequency conversion and laser, and can solve problems such as unfavorable high conversion efficiency, unfavorable regulation and integration, difficulty in obtaining large aperture, high optical quality optical superlattice, etc.

Active Publication Date: 2013-05-15
NANJING INST OF ADVANCED LASER TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0018] The purpose of the present invention is to solve the problem that the existing scheme of using OPO-OPA to increase the output of mid-infrared laser has complex structure, which is not conducive to adjustment and integration, and it is not easy to obtain an optical superlattice with large aperture and high optical quality, so it is not conducive to realizing high Conversion efficiency, high power mid-infrared laser output, propose a high conversion efficiency, high power mid-infrared laser

Method used

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  • Infrared laser in ultra quantum conversion limit based on optic superlattice and construction method thereof
  • Infrared laser in ultra quantum conversion limit based on optic superlattice and construction method thereof
  • Infrared laser in ultra quantum conversion limit based on optic superlattice and construction method thereof

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Embodiment 1

[0050] according to Figure 4 Fabrication of a mid-infrared laser based on the ultra-quantum switching limit of an optical superlattice. The 1064nm laser 1 used to pump the OPO-OPA resonator, the 1064nm 45-degree high-reflection flat mirror 2, 3; the attenuator 4, 5 that can continuously tune the pump light power is a mode selection hole; the pump light passes through the lens 6 focus on the commensurate-ratio double-period superlattice 9, the superlattice is placed in a temperature-controlled furnace 10, and placed together in a resonant cavity composed of two concave mirrors with a curvature of 100mm, and the cavity length is about 100mm; Both ends of the lattice are coated with 1064, 1400-1500, and 3800-4200nm anti-reflection coatings, and the two-cavity mirror is coated with 1400-1500nm high-reflection coatings, 1064 and 3800-4200nm anti-reflection coatings, so the resonant cavity is a single resonance of signal light; 11 The filters are filters that only allow mid-infrar...

Embodiment 2

[0052] according to Figure 4 Fabrication of a mid-infrared laser based on the ultra-quantum switching limit of an optical superlattice. The difference from Example 1 is that the wavelength of the OPO-OPA resonator laser 1 used to pump is 1.3 μm, and the flat mirror 2, 3 with a 45-degree high reflection to 1.3 μm; the attenuator 4, 5 that can continuously tune the pump optical power It is a small hole for mode selection; the pump light is focused on a commensurate double-period superlattice 9 through a lens 6, and the superlattice is placed in a temperature-controlled furnace 10, and is placed together in a resonance composed of two concave mirrors with a curvature of 100mm In the cavity, the cavity length is about 100mm; both ends of the superlattice are coated with 1.3μm, 2μm and 3.9μm antireflection coatings, and the two cavity mirrors are coated with 2μm high reflection coatings, 1.3μm and 3.9μm antireflection coatings, so the resonant cavity is the signal Optical single ...

Embodiment 3

[0054] according to Figure 4 Fabrication of a mid-infrared laser based on the ultra-quantum switching limit of an optical superlattice. The difference from Embodiments 1 and 2 is that the superlattice used for nonlinear frequency conversion is a cascaded periodic structure, and different matching temperatures and periods can be designed according to the needs of the specific matching process to achieve enhanced output of mid-infrared light.

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Abstract

The construction method of mid-infrared laser based on the ultra-quantum conversion limit of optical superlattice uses the following structure of optical superlattice. The structure of optical superlattice provides two inverse lattice vectors at the same time, one of which is used to compensate The phase mismatch of the OPO process of optical parametric oscillation from near-infrared to mid-infrared is used. Another inverse lattice vector is used to compensate the phase mismatch of the OPA process of pumping optical parametric amplification by the signal light of the OPO process. This process can reduce the phase mismatch of the OPO process. The generated mid-infrared laser is further amplified, thereby obtaining a more efficient mid-infrared laser output that exceeds the quantum conversion limit; the optical superlattice adopts a common ratio double period structure. More efficient mid-infrared lasers beyond the quantum conversion limit.

Description

technical field [0001] The invention belongs to the field of nonlinear frequency conversion and laser technology, and specifically relates to a method for generating mid-infrared laser light based on optical parametric oscillation cascaded optical parametric amplification of optical superlattice designed with a special structure to obtain a super quantum conversion limit. High conversion efficiency, high power mid-infrared lasers or multi-wavelength near and mid-infrared lasers. Background technique [0002] In spectroscopy, the wavelength range between 0.75 μm and 1000 μm is called infrared, which is usually divided into three parts: near, middle and far infrared. The wavelength range of near infrared is 0.75-3.0 μm; the wavelength range of mid infrared is 3 -20μm; the far infrared wavelength range is 20-1000μm. Mid-infrared light waves have important applications in remote sensing, detection, medical treatment and biological imaging, especially mid-infrared lasers are wid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/108
Inventor 刘艳花胡小鹏谢臻达吕新杰赵刚祝世宁
Owner NANJING INST OF ADVANCED LASER TECH
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