Unlock instant, AI-driven research and patent intelligence for your innovation.

Frequency-doubling KTP (potassium titanium phosphate) electro-optics Q-switching device

An electro-optic and device technology, applied in the field of electro-optic Q-switching devices, can solve problems affecting the conversion efficiency of frequency multiplication and affecting the effect of electro-optic Q-switching gate closing, etc.

Inactive Publication Date: 2014-11-05
SHANDONG UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a static birefringent phase delay in the KTP crystal, which affects the closing effect of electro-optic Q-switching; and cut according to the phase matching angle at room temperature, there is a walk-off angle during frequency doubling, which affects the frequency doubling conversion efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Frequency-doubling KTP (potassium titanium phosphate) electro-optics Q-switching device
  • Frequency-doubling KTP (potassium titanium phosphate) electro-optics Q-switching device
  • Frequency-doubling KTP (potassium titanium phosphate) electro-optics Q-switching device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1 see figure 1 , a KTP electro-optic Q-switching device capable of frequency doubling, including a shell, electrodes, and electro-optic crystals. The electro-optic crystals include four KTP crystals that meet Class II critical phase matching. The first KTP crystal is arranged in turn from left to right. The second KTP crystal 2 rotated 90° to the first KTP crystal, the third KTP crystal 3 rotated 180° relative to the first KTP crystal, and the fourth KTP crystal rotated 90° relative to the third KTP crystal Crystal 4; gold-plated film 5 on the upper energized surface of KTP crystal 1, gold-plated film 6 on the lower energized surface, gold-plated film 7 on the front energized surface of KTP crystal 2 placed at 90° relative to the first KTP crystal 1, and gold-plated rear energized surface Film 8, on the KTP crystal 3 that is rotated 180° relative to the KTP crystal 1, the gold-plated film 9 is electrified, the gold-plated film 10 is electrified, and the gold-pla...

Embodiment 2

[0049] Embodiment 2 is basically the same as Embodiment 1, except that the first KTP crystal, the second KTP crystal rotated 90° relative to the first KTP crystal, and the third KTP crystal rotated 180° relative to the first KTP crystal The first KTP crystal and the fourth KTP crystal rotated 90° relative to the third KTP crystal are placed in sequence, with an interval of about 1mm in the middle.

[0050] The invention is used in the laser as a Q-switching and frequency doubling device of the laser. The 1064nm laser passes through the KTP crystal, and the nonlinear effect of frequency doubling occurs, and the 532nm laser is emitted, and the pulsed laser with high peak power is obtained through electro-optic Q-switching. When the electro-optic Q-switching works, it adopts the devoltage working mode to eliminate the influence on the phase matching angle when the crystal is pressurized. The boundary temperature of the crystal is controlled by a temperature-controlled furnace.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a frequency-doubling KTP (potassium titanium phosphate) electro-optics Q-switching device which comprises a shell, electrodes and electro-optics crystals, wherein the electro-optics crystals comprise four KTP crystals which are arranged from left to right in sequence; the four KTP crystals have low-conductivity, are cut in a II-type frequency-doubling critical phase matching angle, and are arranged rotating for 90 degrees in sequence; gold membranes are plated on the upper and lower electrifying planes of the first and the third KTP crystals; gold membranes are plated on the front and rear electrifying planes of the second and the fourth KTP crystals; gold leads are led out from the upper electrifying plane of the first crystal, the front electrifying plane of the second crystal, the lower electrifying plane of the third crystal and the rear electrifying plane of the fourth crystal, and are connected with a positive electrode; and gold leads are led out from the electrifying planes at the other sides of the four crystals, and are connected with a negative electrode. A voltage withdrawing working mode is adopted when the device carries out the electro-optics Q-switching action. By utilizing the device, two functions of frequency-doubling and electro-optics Q-switching are realized, and at the same time, walk-off angles and static double refraction phase delay are compensated, and the influence to a phase matching angle when the crystals are pressurized is eliminated.

Description

Technical field: [0001] The invention relates to an electro-optic Q switch device, in particular to a device capable of realizing electro-optic Q-switching and frequency multiplication nonlinear effects in a laser. Background technique: [0002] KTP-like crystals have large effective nonlinear coefficients and good electro-optical properties, so the research on using this type of crystals to develop optical frequency doubling and electro-optic multiplexing devices has aroused great interest. In 1994, Japan's T.Takunori et al. used a piece of 1×3×5mm 3 KTP crystal, on Nd:YVO 4 The output 1064nm laser realizes simultaneous frequency doubling and Q-switching. When the repetition frequency is 100Hz, the modulated 532nm pulse laser output with a pulse width of 18ns and a peak power of 15.4W (Takunori Taira, Takao Kobayashi. Q-switching and frequency doubling of solid-state laser by a single intracavity KTP crystal[J] , IEEE. J. Quantum Eleronies, 1994, 30(3): 800-804). In 199...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/115H01S3/109
Inventor 刘法胜
Owner SHANDONG UNIV OF SCI & TECH