Лазер с диодной накачкой и пассивной модуляцией добротности выходной мощности


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Diode pumped passively Q-swiched laser output

Knowledge Introduction

    Diode-pumped passively Q-swiched solid-state laser is widely used for remote sensing, distance measurement, laser radar, laser medicine, laser micromachining, optics data storage etc. fields with its advantages of narrow pulse width, high peak power, high repetition frequency, high conversion efficiency, compact size.

       This is the typical experiment of research on pulsed laser. In the experiment, there is 1064nm pulsed laser output by putting Cr:YAG into the laser cavity with LD pumped Nd:YAG Measure the wave shape, frequency and pulse width with oscilloscope, then observe the change rules of parameters of wave shape, frequency, pulse width by changing the length of cavity and output mirror with different transmissivity. The students can grasp the adjustment method with Cr:YAG and the measurement of pulsed laser parameters, finally coming to conclusion of influence factors and change rules.

 

 

Experiment Device

 

 

       Main points:

       a) DPSSL passively Q-switched technology

       b) The effect of Q-switch crystal-Cr:YAG with different transmissivity on output pulsed laser

       c) Parameters of Q-switched pulsed laser along with the change of cavity length

       d) Parameters of Q-switched pulsed laser along with the change of output lens transmissivity

Frequency of laser

Pulse width of laser

Related Courses
Principles & technology of lasers, Non-linear Optics, Laser Optics, Laser devices, Photoelectronics,  All Solid State Laser and Nonlinear Optical Frequency Conversion Technology
Basic Configuration
 

Name

Specifications

LD

Wavelength:808nm(Include current source)

Laser

Nd: YAG (Nd: YLF selectable)

Q-switched crystal

Cr:YAG (different transmissivity selectable)

Output lens

with high-reflectivity film of 1064nm (different transmissivity)

Others

Collimator, slideway, crystal base, adjusting bracket, Infrared display card, laser goggle, baffle etc. (Power meter, oscilloscope, photodetector selectable)

 

Expand the Experiment Instrument Application

·355nm/266nm UV laser output experiment

·External cavity frequency doubling and sum frequency experiment

·Research on OPA and OPO experiment

·Research on beam characteristics of solid state laser

·Teaching experiment and research applications

·Laser processing

·Research on multiple wavelength laser

·Detection of crystal