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Continuous wave self-Raman laser of wavelength-locked LD resonance pumping

A Raman laser, wavelength locking technology, applied in the direction of laser utilization scattering effect, structure/shape of optical resonator, etc., can solve the problems of low overall laser efficiency, low pump light absorption rate, high temperature sensitivity, and achieve laser The structure is simple and compact, the absorption rate of pump light is improved, and the spectral line width is narrow.

Inactive Publication Date: 2015-11-25
YANGZHOU UNIV
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Problems solved by technology

However, since the resonant pumping absorption bandwidth of general laser crystals is relatively narrow (<3nm), and the emission wavelength of semiconductor lasers is very sensitive to temperature changes, the emission wavelength will change with temperature, resulting in the resonant pumping method. The low absorption rate of Pu light leads to problems such as low overall efficiency, poor stability, and high temperature sensitivity of the laser, which hinders the practical application of this technology

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  • Continuous wave self-Raman laser of wavelength-locked LD resonance pumping

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Embodiment Construction

[0017] Such as figure 1 As shown, the composition of the laser of the present invention includes a wavelength-locked LD pump source 1, which uses a Bragg grating 2 to lock the wavelength inside, and sequentially arranges a collimating focusing coupling system 3, Laser input cavity mirror 4 , bonded self-Raman crystal 5 and laser output cavity mirror 6 . The resonant cavity is composed of a laser input cavity mirror 4 and a laser output cavity mirror 6, and a bonded self-Raman crystal 5 is placed in the cavity as a self-Raman frequency shift medium.

[0018] Wavelength-locked LD pump source 1 is a wavelength-locked 878.6nm fiber-coupled output semiconductor laser with a maximum output power of 30W (fiber core diameter 200um, numerical aperture 0.22), and its internal wavelength is locked by Bragg grating 2, and the central wavelength of the emission spectrum The drift with temperature is small, and it has good temperature stability. The output laser center wavelength is 878.6n...

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Abstract

A continuous wave self-Raman laser of wavelength-locked LD resonance pumping is disclosed. The invention relates to the technical field of solid laser structures. The continuous wave self-Raman laser comprises a wavelength-locked LD pumping source; and a collimation focusing coupling system, a laser input cavity mirror, a bonding self-Raman crystal and an output cavity mirror are arranged in the laser output direction of the pumping source LD along the same optical axis in sequence. The continuous wave self-Raman laser overcomes the problems of low absorption rate, low output stability, high temperature sensitivity and the like of the resonance pumping lasers, and further improves the performance of the continuous wave self-Raman laser, and finally obtains the continuous Raman laser output with high efficiency, high power and high stability.

Description

technical field [0001] The invention relates to the technical field of solid-state laser structures, in particular to an all-solid-state continuous-wave self-Raman laser that is resonantly pumped by a wavelength-locked semiconductor laser. Background technique [0002] Continuous wave all-solid-state Raman lasers refer to all-solid-state Raman lasers that operate in continuous operation. Since the fundamental frequency light in pulsed lasers has a higher peak power, it is easier to reach the Raman scattering threshold, so most of the previously reported all-solid-state Raman lasers work in the pulsed state. In recent years, continuous wave all-solid-state Raman lasers have attracted more and more attention due to their applications in medicine, biomedicine, optical communications, and environmental control. There are two types of CW all-solid-state Raman laser structures reported so far: split intracavity Raman lasers and self-Raman lasers. Since the CW Raman laser is very...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/30H01S3/08
Inventor 樊莉沈明亚夏长权汪丽春孙慧
Owner YANGZHOU UNIV
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