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Frequency doubling self-regulating Q green laser inside double-doped chrome yttrium aluminum garnet composite photassium titanyl phosphate cavity

A potassium titanyl phosphate cavity, neodymium yttrium aluminum technology, applied in the field of green lasers, can solve the problems of small absorption coefficient, increased loss, light-light conversion efficiency of only 3%, etc., achieve high peak power, improve thermal performance, Achieve the effect of laser gain function and Q-switching function

Inactive Publication Date: 2013-07-10
XIAMEN UNIV
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Problems solved by technology

However, due to the small absorption coefficient of Nd ions in Cr, Nd:YAG crystal at 885nm, and the insertion of KTP crystal in the cavity leads to increased loss, the output power of the laser is only 92mW, and the light-to-light conversion efficiency is only 3%.

Method used

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Embodiment Construction

[0024] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0025] see figure 1 , the embodiment of the present invention is provided with a pumping source 1, a microlens 2, a first lenticular lens 3, a second lenticular lens 4, a laser working substance Cr, Nd:YAG / KTP composite crystal 5, a first coating 6, a second coating 7 and optical filter 8; the selected pump source 1, microlens 2, first lenticular lens 3, second lenticular lens 4, laser working medium Cr, Nd:YAG / KTP composite crystal 5 are arranged in sequence from front to back and located On the same optical axis; the front and rear surfaces of the laser working medium Cr, Nd:YAG / KTP composite crystal 5 are respectively provided with a first coating 6 and a second coating 7, forming the front and rear cavity mirrors of the laser cavity.

[0026] The pumping source 1 is a single-tube laser diode with an output wavelength of 885 nm and a laser power o...

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Abstract

The invention discloses a frequency doubling self-regulating Q green laser inside a double-doped chrome yttrium aluminum garnet composite photassium titanyl phosphate cavity,and relates to a green laser. The self-regulating Q green laser is provided with a pumping source, a micro lens, a first column-shaped lens, a second column-shaped lens and a laser working medium Cr, Nd:YAG / KTP composite crystal. The pumping source, a micro lens, the first column-shaped lens, the second column-shaped lens and the laser working medium Cr, Nd:YAG / KTP composite crystal sequentially are arrayed on a same plain shaft from front to back. Anti-reflection film and a high-reflective film are plated on the rear surface of the laser working medium Cr, Nd:YAG / KTP composite crystal to serve as a back cavity lens of the laser cavity. High-reflective film and anti-reflection film are plated on the front surface of the laser working medium Cr, Nd:YAG / KTP composite crystal of the laser cavity. The number of optical elements used for the laser is small, the production cost is low, the structure is simple and compact, and the laser is convenient to produce and assemble and operate and use by a non-professional person.

Description

technical field [0001] The invention relates to a green laser, in particular to a miniaturized intracavity frequency-doubling green laser directly pumped by the end face of a laser diode. The laser working substance is Cr, Nd:YAG / KTP self-Q-switching and frequency-doubling crystal composite crystals formed. Background technique [0002] The passive Q-switched solid-state laser pumped by laser diode is a kind of laser light source with full solidification, compact structure and high conversion efficiency. The high beam quality, high peak power, and high repetition rate of passive Q-switched lasers make them have very broad application prospects in the fields of laser radar, laser ranging, remote sensing remote control, micromachining, and nonlinear optical conversion to produce new light sources. . The principle of a saturable absorber used as a passive Q-switching switch is based on the nonlinear saturable absorption effect, that is, at a low energy density, the saturable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16H01S3/0941H01S3/109
Inventor 程莹董俊白胜闯王光宇周晓
Owner XIAMEN UNIV
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