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Novel folding cavity laser device with opposed right-angle prisms

A right-angle prism and laser technology, applied in the laser field, can solve the problems of increasing the Q-switched pulse width, increasing the volume of the laser, and difficult to precisely control the pulse width, so as to achieve the effect of adjusting and increasing the cavity length.

Pending Publication Date: 2020-01-03
HUBEI JIUZHIYANG INFRARED SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For Q-switched pulsed solid-state lasers, the pulse width is difficult to control accurately, and the Q-switched pulse width can be controlled more effectively by adjusting the resonator length, but the Q-switched pulse width is not sensitive to the change of the laser cavity length, and sometimes it needs to be greatly increased. Large resonant cavity length can significantly increase the Q-switched pulse width
Especially for some single-mode lasers, in many application fields, it is necessary to provide a longer resonant cavity to obtain sufficient pulse width, and directly increasing the cavity length will significantly increase the volume of the laser, which will not be conducive to the miniaturization design of the laser

Method used

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  • Novel folding cavity laser device with opposed right-angle prisms
  • Novel folding cavity laser device with opposed right-angle prisms
  • Novel folding cavity laser device with opposed right-angle prisms

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Experimental program
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Effect test

Embodiment 1

[0018] refer to figure 1 As shown, a folded cavity laser with opposed right-angled prisms disclosed in the present invention consists of a first right-angled prism 1, a second right-angled prism 2, an output mirror 3, a total reflection mirror 4, a pump module 5, a polarizer 6, and a Q The switch 7 and the λ / 4 wave plate 8 are composed. The output mirror 3 and the total reflection mirror 4 are arranged on the outside of the first right-angle prism 1 and the second right-angle prism 2, and the first right-angle prism 1 and the second right-angle prism 2 are provided with the first light-passing surface 11 and the second parallel to each other respectively. The light-passing surface 12, the first right-angle prism 1, the second right-angle prism 2, the output mirror 3, and the total reflection mirror 4 form the opposed right-angle prism resonant cavity of the laser. The pumping module 5 is the gain medium and the pumping source of the laser, and the polarizer 6, the Q switch 7,...

Embodiment 2

[0028] refer to Figure 4 As shown, as yet another embodiment, the difference from Embodiment 1 is that the output mirror 3 and the total reflection mirror 4 are on the same side of the first right-angle prism 1 and the second right-angle prism 2 and are coplanar. The polarizer 6 , the Q switch 7 and the λ / 4 wave plate 8 are arranged between the light-passing surface 10 at the right-angle vertex and the total reflection mirror 4 , and the pump module 5 is arranged between the second light-passing surface 12 and the output mirror 3 .

[0029] The thickness of the first rectangular prism 1 is 10 mm, the width of the light-transmitting surface 10 at the apex of the right angle is 6 mm, and the length of the hypotenuse is 56 mm. The thickness of the second rectangular prism 2 is 10 mm, and the length of the hypotenuse is 64 mm. The distance between the right-angle vertices of the first right-angle prism 1 and the right-angle vertices of the second right-angle prism 2 in the X dir...

Embodiment 3

[0032] refer to Figure 5 As shown, as yet another embodiment, the difference from Embodiment 1 is that the output mirror 3 and the total reflection mirror 4 are on opposite sides of the first right-angle prism 1 and the second right-angle prism 2, and polarizers 6 arranged in sequence , Q switch 7 and λ / 4 wave plate 8 are arranged between the first light-passing surface 11 and the total reflection mirror 4 , and the pump module 5 is arranged between the light-passing surface 10 at the right-angle vertex and the output mirror 3 .

[0033] The thickness of the first rectangular prism 1 is 10 mm, the width of the light-transmitting surface 10 at the apex of the right angle is 6 mm, and the length of the hypotenuse is 56 mm. The thickness of the second rectangular prism 2 is 10 mm, and the length of the hypotenuse is 48 mm. The distance between the right-angle vertices of the first right-angle prism 1 and the right-angle vertices of the second right-angle prism 2 in the X direct...

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Abstract

The invention relates to a novel folding cavity laser device with opposed right-angle prisms. By utilizing the reflection characteristic of the opposite right-angle prisms, resonance light beams are reflected back and forth between the two right-angle prisms, and the cavity length of a resonance cavity can be effectively increased. The laser device is advantaged in that the cavity length can be remarkably increased in the small space, moreover, the cavity length of the laser device can be greatly adjusted by adjusting a distance between the right-angle prisms so that adjustment of part of laser parameters is realized.

Description

technical field [0001] The invention belongs to the technical field of lasers, and in particular relates to a folded cavity laser with opposed rectangular prisms. Background technique [0002] The resonant cavity is an essential part of the solid-state laser, which can provide positive feedback for the laser and control the characteristics of the oscillating beam in the cavity. The length of the laser cavity is an important parameter of the laser. [0003] For Q-switched pulsed solid-state lasers, the pulse width is difficult to control accurately, and the Q-switched pulse width can be controlled more effectively by adjusting the resonator length, but the Q-switched pulse width is not sensitive to the change of the laser cavity length, and sometimes it needs to be greatly increased. A large resonant cavity length can significantly increase the Q-switched pulse width. Especially for some single-mode lasers, in many application fields, it is necessary to provide a longer res...

Claims

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Application Information

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IPC IPC(8): H01S3/08
CPCH01S3/08H01S3/08059
Inventor 彭堂超向康席文强岳松余龙
Owner HUBEI JIUZHIYANG INFRARED SYST CO LTD
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