45 deg. oblique axis pumping method and pumping module for strip shaped laser crystal

A laser crystal and strip technology, applied in the laser field, can solve the problems of high cost, complicated process, and the pump light and the laser output optical axis are not parallel, so as to reduce the interface reflection loss, improve the efficiency, and improve the pump power density. Effect

Inactive Publication Date: 2005-10-26
TSINGHUA UNIV
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Problems solved by technology

However, this solution requires four-corner pumping and four-sided bonding, and the process is complicated; none of the adjacent eight small faces has the same coating, and most of them are two-color films, so the coating process is complicated and the cost is high.
All the pumping methods can be attributed or approximately attributed to the parallel op

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  • 45 deg. oblique axis pumping method and pumping module for strip shaped laser crystal
  • 45 deg. oblique axis pumping method and pumping module for strip shaped laser crystal
  • 45 deg. oblique axis pumping method and pumping module for strip shaped laser crystal

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] The invention provides a 45° oblique-axis pumping method for a slab-shaped laser crystal, that is, the end of the slab-shaped laser crystal is processed into a 45° inclined plane with the longitudinal direction of the laser crystal, so that the pumping light passes through the The 45° slope is coupled into the laser crystal, and the pump light propagates in the laser crystal in a zig-zag (Zig-Zag) manner to pump the laser crystal; in the plane of the pump optical axis, the pump optical axis and the vibration incident from the side / Amplify the projection of the laser optical axis into a 45° angle.

[0020] In the above method, one input method of oscillating / amplifying laser is: vertically cutting the other two sides of the slab-shaped laser crystal, so that the oscillating / amplifying laser is injected into the vertical plane, and passes through the l...

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Abstract

This invention relates to a pumping method for a 45deg. clino-axis and a pump module, which combines the advantages of parallel optical axis pump and vertical optical axis pump and puts forward a 45deg.clino-axis pump method and a pump module. Since the pump light is transmitted in zigzag in the crystal, it ensures the uniformity of the pump and full absorption of the crystal to pump lights, it's more suitable for solid laser materials with low absorption coefficient and fine output beams, besides, the total reflection of the 45deg. can reduce the interface reflection loss and cost of a laser crystal, the coupled face of 45deg. cutting increases the coupled face by 1.4times, move pump lights are coupled in.

Description

technical field [0001] The invention relates to a 45° oblique-axis pumping method and a pumping module for a slab-shaped laser crystal, belonging to the technical field of lasers. Background technique [0002] At present, there are two main pump coupling methods for laser diode-pumped solid-state lasers—parallel optical axis pumping and vertical optical axis pumping. The parallel optical axis pumping refers to the pump coupling method in which the pump optical axis is parallel to the laser exit optical axis; the vertical optical axis pump refers to the pump coupling method in which the pump optical axis is perpendicular to the laser exit optical axis. These two pump coupling methods have their own advantages and disadvantages. In the parallel optical axis pumping, the mode matching between the pump light and the laser is better, and the light output efficiency and beam quality are relatively high, but the power expansion is limited by the light power density of the incident...

Claims

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Application Information

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IPC IPC(8): H01S3/0941
Inventor 陈刚巩马理柳强闫平李晨黄磊张海涛崔瑞祯贾维溥宫武鹏
Owner TSINGHUA UNIV
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