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Double-wavelength external cavity resonance laser frequency converting device with tunable wavelength

A laser frequency conversion, dual-wavelength technology, applied to lasers, laser components, phonon exciters, etc.

Inactive Publication Date: 2010-12-15
SHANXI UNIV
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AI Technical Summary

Problems solved by technology

After the frequency-converted laser output is obtained based on the dual-wavelength external cavity resonance technology, the output frequency of the frequency-converted laser needs to be scanned. However, there is currently no method that can scan the output frequency of the frequency-converted laser based on the dual-wavelength external cavity resonance technology. installation

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  • Double-wavelength external cavity resonance laser frequency converting device with tunable wavelength
  • Double-wavelength external cavity resonance laser frequency converting device with tunable wavelength
  • Double-wavelength external cavity resonance laser frequency converting device with tunable wavelength

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Embodiment Construction

[0014] A wavelength-tunable dual-wavelength external cavity resonant laser frequency conversion device includes a function generator 1, a first laser 2 located at the signal output end of the function generator 1, a first matching lens 3, a first half-wave plate 4, a second Two lasers 5, a second matching lens 6, a second half-wave plate 7, a nonlinear crystal 25, and an "8" word ring cavity; the "8" word ring cavity includes a first cavity mirror 8, a second Cavity mirror 9, third cavity mirror 10, fourth cavity mirror 11, piezoelectric ceramics 12; wherein, first cavity mirror 8, second cavity mirror 9 are located on the same straight line; third cavity mirror 10, fourth cavity mirror 11 , the nonlinear crystal 25 is located on the same straight line; the piezoelectric ceramic 12 is fixed on the outer surface of the second cavity mirror 9;

[0015] The reflective end of the first cavity mirror 8 is provided with a first HC frequency locking system; the first HC frequency loc...

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Abstract

The invention relates to a laser frequency converting, scanning and locking technology, in particular to a double-wavelength external cavity resonance laser frequency converting device with a tunable wavelength, solving the problem that a device capable of scanning the output frequency of frequency converting laser obtained on the basis of a double-wavelength external cavity resonance technology is not proposed at present. The double-wavelength external cavity resonance laser frequency converting device with a tunable wavelength comprises a function generator, a first laser arranged at a signal output end of the function generator, a first matched lens, a first 1 / 2 wave plate, a second laser, a second matched lens, a second 1 / 2 wave plate, a non-linear crystal and a 8-shaped annular cavity. The invention solves the problem that a device capable of scanning the output frequency of frequency converting laser obtained based on the double-wavelength external cavity resonance technology is not proposed at present, and a method and the device of the invention are suitable for various converting processes of various frequency including sum frequency, frequency multiplication, difference frequency, and the like.

Description

technical field [0001] The invention relates to laser frequency conversion, scanning and locking technology, in particular to a wavelength-tunable dual-wavelength external cavity resonant laser frequency conversion device. Background technique [0002] For specific wavelength lasers used in special purposes, dye lasers and gas lasers can be used to obtain them. However, due to the large size of these two systems, their low efficiency, high price, and short lifespan, they are rarely used. In recent decades, semiconductor lasers and fiber lasers have been widely used in various fields due to their simple structure and operation and stable operation. However, their output wavelengths are mainly in the near-infrared or mid-to-far infrared bands, which are rarely achieved alone. Direct output of UV or visible light. Based on these two lasers, lasers with almost any wavelength from ultraviolet to near infrared can be obtained through nonlinear frequency conversion technology. ...

Claims

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Application Information

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IPC IPC(8): H01S3/109H01S3/098
Inventor 马维光李志新闫晓娟尹王保肖连团贾锁堂
Owner SHANXI UNIV
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