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Biaxial-crystal electro-optical Q switch and fabrication method thereof

An electro-optical and switching technology, applied in circuits, lasers, electrical components, etc., can solve problems such as the influence of temperature stability of Q-switching switches, and achieve the effect of low insertion loss, simple operation, and solving influences.

Active Publication Date: 2017-12-12
SINOMA SYNTHETIC CRYSTALS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects in the prior art, the present invention provides a biaxial crystal electro-optical Q-switched switch and its preparation method; it can effectively and reliably improve the temperature stability of the Q-switched switch, has low insertion loss and is easy to operate, and can not only solve the problems caused by dual The influence of the static birefringence of the axial crystal electro-optic crystal on the temperature stability of the Q-switching switch as the temperature changes, while also ensuring the inherent extinction ratio of the electro-optic Q-switching switch

Method used

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  • Biaxial-crystal electro-optical Q switch and fabrication method thereof

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Embodiment approach

[0061] The second embodiment of the present invention provides a second specific implementation of a biaxial crystal electro-optical Q-switch, see Figure 4 , the electro-optical Q-switch specifically includes the following contents:

[0062] The electro-optical Q-switch includes: two electro-optical crystal elements 21 with the same shape, and a phase compensation wave plate 22 arranged between the two electro-optical crystal elements 21 along the light passing direction, and the c of the electro-optical crystal element 21 Electrode layers 3 are plated on both sides.

[0063] The electro-optical crystal element 21 and the phase compensation wave plate 22 are both rectangular biaxial electro-optical crystals of the same type.

[0064] The two electro-optic crystal elements 21 and the phase compensating wave plate 22 are bonded together by thermal bonding technology.

[0065] Compared with the first embodiment, the electro-optical crystal element 21 and the phase compensation...

specific Embodiment approach 2

[0078] Embodiment 4 of the present invention provides a specific embodiment 2 of a method for manufacturing a biaxial crystal electro-optical Q-switch corresponding to embodiment 1, see Figure 7 , the preparation method of the electro-optical Q-switch specifically includes the following contents:

[0079] Step 201 : cutting the original biaxial crystal electro-optical crystal according to the direction of electro-optical application to obtain a rectangular biaxial electro-optical crystal.

[0080] Step 202: Perform precise optical polishing on the light-transmitting surface 4 of the electro-optic crystal element 11 obtained by cutting.

[0081] Step 203 : A detachable metal collar 5 is arranged on the outer wall of the phase compensation wave plate 12 , and the inner wall of the metal collar 5 is closed and adhered to the outer wall of the phase compensation wave plate 12 .

[0082] Step 204 : Coating the electrode layer 3 on the two c-direction surfaces extending along the ...

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Abstract

The invention provides a biaxial-crystal electro-optical Q switch and a fabrication method thereof. The biaxial-crystal electro-optical Q switch is made of an integrated rectangular biaxial-crystal electro-optical crystal, a phase compensation wave plate is arranged at a central position of a light through direction of the electro-optical Q switch, electro-optical crystal components are arranged at parts of two sides of the phase compensation wave plate of the electro-optical Q switch, electrode plates are electroplated on two c surfaces, which extend along the light through direction and are parallel to each other, of each electro-optical component, the length of the phase compensation wave plate in the light through direction is odd times of the thickness of the phase compensation plate which is used for generating phase delay on a target laser, and the lengths of the two electro-optical crystal components are same. By the biaxial-crystal electro-optical Q switch, the temperature stability of the Q switch can be effectively and reliably improved, the Q switch is low in insertion loss and is simple to operate, the influence on the temperature stability of the Q switch caused by change of static birefringence of the biaxial-crystal electro-optical crystal with a temperature can be solved, and the inherent extinction ratio of the electro-optical Q switch is also ensured.

Description

technical field [0001] The invention relates to the technical field of laser equipment, in particular to a biaxial crystal electro-optical Q-switch and a preparation method thereof. Background technique [0002] The electro-optical Q-switch is a switch that uses the electro-optic effect of the crystal to change the polarization state of the laser light passing through the crystal, thereby connecting or cutting off the oscillating optical path in the cavity. It has the advantages of short switching time, high efficiency, pulse width, and peak power. It is an important device for solid-state lasers and has been widely used in laser technology. The traditional electro-optical Q-switches currently used in laser technology are mainly composed of KD 2 PO 4 , LiNbO 3 Made of uniaxial crystals. But these two crystals each have some shortcomings. KD 2 PO 4 (KD*P for short) crystal absorbs moisture and needs to be protected by a moisture-proof box with a complex structure durin...

Claims

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Application Information

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IPC IPC(8): H01S3/115
CPCH01S3/115
Inventor 陈建荣张书峰王海丽袁雷沈德忠
Owner SINOMA SYNTHETIC CRYSTALS CO LTD
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