Pulse pumping passive Q-switched laser with light delay controllable function

A laser and pulse pump technology, applied in the field of lasers, can solve the problems of synchronization, large fluctuation range of optical delay, inability of optical pulse, etc., to achieve the effect of stabilizing the delay time and improving the application range

Pending Publication Date: 2020-03-31
长春新产业光电技术有限公司
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the passively Q-switched laser with continuous pumping, if the pump power is not actively controlled, there will always be instability in the timing and repetition frequency of pulse generation. The pulse cannot be synchronized with other instruments or detection equipment, which greatly limits the application range of passive Q-switched lasers
This method of controlling the laser pulse through pulse pumping makes the repetition frequency of the optical pulse the same as the repetiti

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
  • Pulse pumping passive Q-switched laser with light delay controllable function
  • Pulse pumping passive Q-switched laser with light delay controllable function
  • Pulse pumping passive Q-switched laser with light delay controllable function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Such as figure 1 As shown: a pulse-pumped passive Q-switched laser with an optical delay controllable device in the present invention includes a pump source 1, a coupling lens 2, a laser gain medium 3 with an all-reflection film, a passive Q-switched crystal 4, and an output Mirror 5, beam splitter 6, photodetector 7 and feedback device 8.

[0035] The laser gain medium 3 with a total reflection film and the output mirror 5 constitute a laser resonant cavity.

[0036] The pumping source 1 is converged by the coupling lens 2 and then absorbed by the laser gain medium 3 with an all-reflection film, forming population inversion in the laser gain medium 3 and causing oscillation in the laser resonant cavity.

[0037] The passive Q-switching crystal 4 is a passive Q-switching crystal based on the saturable absorption characteristic of the c...

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 discloses a pulse pumping passive Q-switched laser with a light delay controllable function. Photoelectric monitoring and feedback functions are added in passive Q-switched laser of pulse pumping, light delay is monitored in real time through a photoelectric detector, a test value is compared with a preset value through a feedback device, and pumping power is fed back and adjusted atthe same time, so that the light delay of a laser is stabilized near the preset value. According to the scheme of the invention, the optical delay of the pulse-pumped passive Q-switched laser can beeffectively controlled, the delay stability of the passive Q-switched laser is improved, the optical pulse can be synchronized with external equipment or devices and the like, and the application of the passive Q-switched laser in the fields of laser radars, spectrum instruments, photoelectric detection and the like is expanded.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a pulse-pumped passive Q-switched laser with a controllable optical delay function. Background technique [0002] Q-switching technology is the main technology to obtain giant pulse laser, Q-switching technology has two kinds of active Q-switching and passive Q-switching. Compared with active Q-switching technology, passive Q-switching technology has the characteristics of compact structure, high energy conversion efficiency, and low price, and has broad application prospects in military and civilian fields such as long-distance measurement, remote sensing detection, medical health, and space communication. And has occupied an increasingly important position. [0003] Cr 4+ :YAG saturable absorption Q-switching is the most widely used type of passive Q-switching. When Cr 4+ : When the incident light signal of YAG crystal in its absorption band is weak, it will show a very obvi...

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
IPC IPC(8): H01S3/11H01S3/13
CPCH01S3/11H01S3/1305H01S3/1306
Inventor 牛娜郑权王彦曲大鹏李昕奇夏磊赵岭
Owner 长春新产业光电技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap