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Double clad optical fibre passive Q-switched laser

A double-clad fiber and laser technology, applied in the field of lasers, can solve problems such as high cost and complex structure, and achieve the effects of low cost, small size, and easy adjustment.

Inactive Publication Date: 2007-04-25
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a double-clad fiber passive Q-switched laser, which solves the technical problems of complex structure and high cost in the background art

Method used

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Embodiment Construction

[0018] The invention integrates the cladding pumping technology and the Q-switching technology, utilizes the saturable absorption Q-switching characteristic of the semiconductor saturable absorber mirror to form a Q-switching pulse, and the semiconductor saturable absorber mirror also serves as a coupling output mirror.

[0019] The pumping light source 1 of the present invention adopts a semiconductor 980nm pumping light source. The resonant cavity is composed of a front cavity mirror 3 , a double-clad ytterbium-doped fiber 4 and a Q-switching device 5 . The resonant cavity has a simple cavity structure, is suitable for adjustment, and has high light-to-light conversion efficiency. The front cavity mirror 3 can be a dichroic mirror coated with an antireflection film for a wavelength of 980nm and a highly reflective dielectric film for a wavelength of 1060nm. The double-clad ytterbium-doped fiber 4 can be a double-clad fiber with an outer cladding aperture of 0.40, a cladding...

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Abstract

The invention relates to a double-pack optical fiber inactive Q-adjust laser, which comprises pump light source, optical fiber couple system, and resonance chamber. Wherein, the resonance chamber comprises front chamber mirror, double-pack yttrium-doping optical fiber, and Q adjuster; the input of optical fiber is contacted with front chamber mirror, while the outlet is contacted with Q adjuster; the couple system is between the pump light source and front chamber mirror. The invention has high increment, high light transform efficiency, low threshold value, and stable property.

Description

technical field [0001] The invention belongs to the field of laser technology, and relates to a passive Q-switching laser of a double-clad fiber, in particular to a passive Q-switching laser of a double-cladding ytterbium-doped fiber. Background technique [0002] With the widespread application of cladding pumping technology and the successful development of various special optical fibers, the development of fiber lasers has achieved rapid development. The short-pulse fiber laser obtained by combining cladding pumping technology and Q-switching technology has the characteristics of high pulse energy and high peak power, but most of the existing cladding pumping fiber Q-switching lasers use acousto-optic modulators (AOM) Or the electro-optical modulator (EOM) is used as the switching element, although the repetition frequency can be adjusted, the structure of the system is relatively complicated, and the cost is high, the volume is large, and the use is inconvenient. Conte...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/127
Inventor 赵卫高存孝朱少岚王屹山陈国夫
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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