Yellow laser using self convertor crystal intracavity sum frequency to generate yellow light

A self-variable frequency and crystal cavity technology, applied in the laser field, can solve the problems of yellow light and other problems, and achieve the effect of stable operation and easy adjustment

Inactive Publication Date: 2006-10-11
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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Problems solved by technology

There is no report of using the self-sum frequency function of this kind of crystal to produce yellow light

Method used

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  • Yellow laser using self convertor crystal intracavity sum frequency to generate yellow light
  • Yellow laser using self convertor crystal intracavity sum frequency to generate yellow light

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Embodiment Construction

[0015] A specific typical embodiment of the present invention is briefly described below in conjunction with accompanying drawing:

[0016] The self-converting crystal (4) uses NYAB (Nd:YAl 3 (BO 3 ) 4) nonlinear laser crystal, the pumping source (1) selects 808nm semiconductor laser (LD). In the figure, (1) is the LD pump source of ≈0.81um; (2) is the optical coupler (condensing head); (3) is the laser cavity dielectric diaphragm, which can be an independent dielectric diaphragm, It can also be coated on the front end surface of the self-converting crystal, which is highly transparent to ≈0.81um LD pump light, and highly reflective to 1.06um, 1.34um and 0.59um; (4) is NYAB self-converting frequency Non-linear laser crystals, the two end faces of the crystal, in addition to high-quality polishing, are also coated with an anti-reflection coating (highly transparent to the three wavelengths of 1.06um, 1.34um and 0.59um; if the laser cavity If the front-end dielectric membran...

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Abstract

The yellow laser that uses the sum frequency in the self-variable crystal cavity to generate yellow light is a nonlinear laser crystal that uses a semiconductor laser (LD) or a lamp to pump a luminescent center and a nonlinear optical effect at the same time - a self-variable crystal (such as aluminum tetraborate yttrium yttrium Neodymium, referred to as NYAB), produces 1.06um and 1.34um in the same laser cavity, and at the same time generates yellow laser with the help of the nonlinear optical sum-frequency effect of the same crystal, and couples it out. There is only one crystal element in the laser cavity, and the axis direction of the laser cavity - the light passing direction of the crystal is the phase matching direction required by the frequency mixing (sum frequency) of 1.06um and 1.34um. This new type of laser has the advantages of small intracavity loss, compactness, easy adjustment, good stability and wide practicability.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a laser device for generating yellow laser light through a nonlinear laser crystal having both laser gain and nonlinear optical effects—self-variable frequency crystal. Background technique [0002] From the perspective of technical background, so far, there are no solid-state (crystal) or semiconductor yellow laser products on the market. From the literature reports, there is no report of using self-converting crystals to mix in the cavity to generate yellow laser light. Only in the U.S. military industry department, they have begun to pay attention to the research of yellow lasers. However, their technical route is completely different from the patent of this invention. They use a special KTP crystal that can achieve non-critical phase matching to mix in the cavity to obtain yellow laser light. The output, light emission and frequency conversion are completed by different crysta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/108H01S3/091H01S3/16
Inventor 吴柏昌涂朝阳
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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