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Method and device for promoting output characteristics of Nd:YAG laser device

An output characteristic, laser technology, applied in laser cooling devices, lasers, laser parts and other directions, can solve the problems of restricting high output power and high beam quality, weakening the thermal effect of the slats, etc., to achieve reduced thermal effect, easy engineering application, The effect of good beam quality

Inactive Publication Date: 2017-08-04
BEIJING UNIV OF TECH
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Problems solved by technology

However, as the pump power increases, the thermal effect of the laser medium becomes an important factor restricting high output power and high beam quality.
There is no report on reducing the thermal effect of slabs to obtain high power and high beam quality by direct bonding of sapphire and Nd:YAG

Method used

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  • Method and device for promoting output characteristics of Nd:YAG laser device
  • Method and device for promoting output characteristics of Nd:YAG laser device
  • Method and device for promoting output characteristics of Nd:YAG laser device

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Embodiment Construction

[0021] Attached below Figure 1 to Figure 2 Further explanation of this new laser oscillator:

[0022] refer to figure 1 , figure 1 It is the structural diagram of the slab laser oscillator. Depend on figure 1 It can be seen that the oscillator is composed of a trapezoidal slab laser gain medium 1 , a pump source 2 , a total reflection mirror 3 , a cylindrical mirror 4 , an aperture 5 , and an output mirror 6 .

[0023] The trapezoidal slab laser gain medium is a bonded crystal of sapphire and Nd:YAG.

[0024] The pumping source is a stack of four semiconductor bars with a peak power of 500w.

[0025] The total reflection mirror is a 1064 0-degree total reflection.

[0026] The cylindrical mirror is a cylindrical mirror with a focal length of 70mm, which is used to focus the pump light in the vertical direction.

[0027] The aperture is a circular aperture aperture with a diameter of 1.5mm.

[0028] The output mirror is an output mirror with a transmittance of 30%. It...

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Abstract

The invention discloses a method and a device for promoting output characteristics of a Nd:YAG laser device and belongs to the field of laser device manufacturing. The device comprises a trapezoid lath laser gain medium, a pumping source, a total reflective mirror, a cylindrical mirror, a diaphragm and an output lens; a Nd:YAG crystal lath bonded with sapphire is arranged as the trapezoid lath laser gain medium; a bonding technique of different materials is utilized to reduce the heat effect of a heat lath laser device and promote the output power and the light beam quality. The excellent heat conduction of the sapphire is utilized to realize the laser output in high output power and high light beam quality in the free oscillation running process of the grazing incidence lath laser device.

Description

technical field [0001] The invention relates to a crystal bonded with Nd:YAG and sapphire, which is used to make a slab side-pumped oscillator, and uses the good heat conduction of sapphire to reduce the thermal effect of the slab laser and improve the output characteristics. It belongs to field of laser manufacturing. Background technique [0002] Due to the advantages of compact structure, high efficiency, and good beam quality, LD pumped slab solid-state lasers have broad application prospects in the industrial field and are currently a research hotspot in the laser field. However, with the increase of the pump power, the thermal effect of the laser medium becomes an important factor restricting the high output power and high beam quality. The invention utilizes the high thermal conductivity of sapphire to effectively reduce the thermal effect of the slab laser by directly bonding the sapphire and Nd:YAG as the gain medium, thereby improving the output characteristics of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/04H01S3/042H01S3/16H01S3/091
CPCH01S3/0405H01S3/042H01S3/091H01S3/1643
Inventor 李强季林涛惠勇凌姜梦华雷訇
Owner BEIJING UNIV OF TECH
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