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Quantum cascading laser device

A quantum cascade, laser technology, applied in the field of lasers, can solve problems such as limited output power, achieve high power output, and maintain the effect of beam quality

Inactive Publication Date: 2017-06-13
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
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Problems solved by technology

[0003] In order to overcome the problem of limited output power of a single tube of existing quantum cascade lasers, the invention provides a quantum cascade laser

Method used

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Examples

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no. 1 example

[0037] In the first exemplary embodiment of the quantum cascade laser and its beam combining method of the present invention, a quantum cascade laser 1 is provided. figure 1 It is a schematic diagram of the internal structure of the quantum cascade laser body of the first embodiment of the present invention. Such as figure 1 As shown, the quantum cascade laser 1 of this embodiment includes: several single-tube quantum cascade lasers 3 , a stepped heat sink 2 , an aspheric lens 4 and a reflector 5 .

[0038] Each component of the quantum cascade laser 1 of this embodiment will be described in detail below.

[0039] Such as figure 1 As shown, two stepped planes 6 are opened on the wall surface of the stepped heat sink 2 . The heat sink seat 8 of the single-tube quantum cascade laser 2 is fixed on the stepped plane 6 of the stepped heat sink 2, such as figure 2As shown, on the front cavity surface 15 of the single-tube quantum cascade laser 3, an anti-reflection coating 16 w...

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Abstract

The invention provides a quantum cascading laser device. The quantum cascading laser device includes stepped heat sinks, single-tube quantum cascading laser devices, aspherical lenses and reflecting mirrors, wherein a plurality of step planes are formed on the wall surface of each stepped heat sink, the single-tube quantum cascading laser devices are fixed on the step planes of the stepped heat sinks, the aspherical lenses are fixed on the step planes of the stepped heat sinks and located at the front ends of the single-tube quantum cascading laser devices, and the reflecting mirrors are fixed on the step planes of the stepped heat sinks and located at the front ends of the aspherical lenses. The quantum cascading laser device solves the heat dissipation problem of current quantum cascading laser devices, an external-cavity spectral beam combining mode is adopted to ensure the quality of laser beams, so that a feasible high-efficiency beam combining method of the quantum cascading laser device is provided.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a quantum cascade laser. Background technique [0002] Quantum cascade lasers are semiconductor lasers designed according to quantum mechanical energy level theory (such as two-phonon resonance, confinement to continuous, etc.), and electrons emit light from subband to subband transitions. Different from traditional semiconductor lasers, the active region of quantum cascade lasers is composed of a series of well barrier pairs composed of periodically changing thin films. The thickness of these periodically changing thin film well barrier pairs determines the lasing wavelength of quantum cascade lasers. , the lasing wavelengths of quantum cascade lasers have achieved wide wavelength coverage from mid-infrared (MIR) to terahertz (THZ) bands. Since its birth in 1994, due to its high reliability, small size and high conversion efficiency, quantum cascade lasers have important applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/34H01S5/40
CPCH01S5/3401H01S5/4012
Inventor 赵越张锦川贾志伟周予虹刘峰奇刘俊岐王占国
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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