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YAG (Yttrium Aluminum Garnet) green laser for semiconductor double-end-face pump with high monopulse peak power and high repetition frequency

A high repetition frequency, peak power technology, applied in the field of optoelectronics, can solve the problems of condensation of optical components, equipment can not work, can not dissipate heat, etc., to achieve the effect of compact device structure, high peak power, and small footprint

Inactive Publication Date: 2013-04-17
WUHAN LEAD LASER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the choice of cooling method, when a single water cooling method is used, there are two disadvantages: when the factory ambient temperature exceeds 30°, the optical components in the laser will condense (the best temperature of the laser diode is 25°), and the equipment will not work. ;Optimal operating temperature of diode module, YAG rod, Q drive and frequency doubling crystal LBO are different, and the laser beam quality cannot be adjusted to the best
When a single TEC cooling method is used, when the ambient temperature of the factory is lower than 5°, the temperature of the laser diode cannot rise to 25° due to too fast heat dissipation (the best temperature of the laser diode is 25°), and the laser does not emit light; in the factory environment When the temperature exceeds 30°, the fan laser alone cannot dissipate heat, and the device cannot work
Various existing lasers cannot meet the application requirements of high single pulse peak value, high power, and repetition frequency below 5kHz (including 5kHz) due to large changes in the ambient temperature range.

Method used

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  • YAG (Yttrium Aluminum Garnet) green laser for semiconductor double-end-face pump with high monopulse peak power and high repetition frequency
  • YAG (Yttrium Aluminum Garnet) green laser for semiconductor double-end-face pump with high monopulse peak power and high repetition frequency
  • YAG (Yttrium Aluminum Garnet) green laser for semiconductor double-end-face pump with high monopulse peak power and high repetition frequency

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Experimental program
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Effect test

Embodiment 1

[0018] Embodiment 1: as figure 1 As shown, the YAG intracavity frequency-doubling laser includes a YAG rod laser working crystal 1-6, and diode pumping light sources 1-1 and 1-2 are arranged coaxially (optical axes) on both sides of the YAG rod laser working crystal 1-6; The optical coupling system on the side of the tube pumping light source 1-1 includes a first optical coupling system composed of a first diverging mirror 1-3 and a first focusing mirror 1-12 arranged in sequence perpendicular to the optical axis side of the first pumping light source;

[0019] The optical coupling system on the side of the tube pumping light source 1-2 includes a second diverging mirror 1-4 and a second focusing mirror 1-13 arranged in sequence perpendicular to the optical axis of the second pumping light source to form a second optical coupling system. The direct coupling structure is simple.

[0020] The "T"-shaped flat resonant cavity of the YAG rod laser working crystal 1-6 includes the...

Embodiment 2

[0024] Embodiment 2: as figure 2 As shown, the YAG intracavity frequency-doubling laser includes a YAG rod laser working crystal 2-6, and diode pumping light sources 2-1 and 2-2 are arranged coaxially (optical axes) on both sides of the YAG rod laser working crystal 2-6; The optical coupling system on the side of the tube pumping light source 2-1 includes a first optical coupling system composed of a first diverging mirror 2-3 and a first focusing mirror 2-12 arranged in sequence perpendicular to the optical axis side of the first pumping light source;

[0025] The optical coupling system on the side of the diode pumping light source 2-2 includes a second diverging mirror 2-4 and a second focusing mirror 2-13 arranged in sequence perpendicular to the optical axis of the second pumping light source to form a second optical coupling system. The direct coupling structure is simple.

[0026] The "T" shape flat resonant cavity of the YAG rod laser working crystal 2-6 includes th...

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Abstract

The invention discloses a YAG (Yttrium Aluminum Garnet) green laser for a semiconductor double-end-face pump with high monopulse peak power and high repetition frequency. The YAG green laser comprises a YAG rod laser working crystal, two sets of optical coupling systems, a resonant cavity of the YAG rod laser working crystal and a cooling system, wherein two pump light sources are respectively and coaxially arranged on the two sides of the YAG rod laser working crystal; the two sets of optical coupling systems are arranged along a straight line and are used for respectively focusing the two pump light sources at the center of the YAG rod laser working crystal; and the cooling system is used for cooling the laser. The YAG green laser has a compact structure and can stably work at wide environmental temperature at 2-33 DEG C. Meanwhile, under high repetition frequency (5kHz), the monopulse can obtain wider pulse width and higher peak power.

Description

technical field [0001] The invention belongs to optoelectronic technology, in particular to a YAG green laser. Background technique [0002] Among the pumping methods using a semiconductor laser as a pumping source, the end pumping method has the advantages of high coupling efficiency and good quality of output laser beam. For some industry applications such as laser engraving marking of transparent materials, although the output laser power of laser crystal YVO4 is high, it can only work above 10kHz, which is not suitable for high single pulse peak power. For the choice of cooling method, when a single water cooling method is used, there are two disadvantages: when the factory ambient temperature exceeds 30°, the optical components in the laser will condense (the best temperature of the laser diode is 25°), and the equipment will not work. ; The best working temperature of diode module, YAG rod, Q driver and frequency doubling crystal LBO are different, so the quality of l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16H01S3/042H01S3/0941H01S3/081
Inventor 柯西军
Owner WUHAN LEAD LASER