Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for generating high time contrast femtosecond laser pulse

A laser pulse and contrast technology, which is applied to the structure/shape of lasers, laser components, and optical resonators, can solve problems such as complex structures, and achieve simple structures, compact structures, and large improvements in time contrast.

Pending Publication Date: 2019-10-29
河南省启封新源光电科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can increase the time contrast of traditional regenerative amplifiers by 2 to 4 orders of magnitude, and overcomes the shortcomings of the complex structure of double-chirped pulse amplification technology (DCPA). The millijoule-level ultrashort pulse can only be obtained after , amplification and compression

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
  • Method and device for generating high time contrast femtosecond laser pulse
  • Method and device for generating high time contrast femtosecond laser pulse
  • Method and device for generating high time contrast femtosecond laser pulse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings. Figure 4 Shown is a schematic structural view of the high time contrast regenerative amplification device of the present invention. The components corresponding to the labels of each part are: 1-femtosecond laser oscillator, 2-laser pump source, 3-regenerative amplifier, 4-single-channel electro-optic switch, 5-polarizer, 6-time contrast enhancement module, 7-pulse Stretcher, 8-half-wave plate, 9-pulse compressor.

[0023] The method for generating high temporal contrast laser pulses by the regenerative amplifying device is as follows:

[0024] 1. The seed pulse laser output from the femtosecond laser oscillator 1 is directly sent to the regenerative amplifier 3 for pulse pre-amplification. The energy of regenerative amplifier 3 is provided by laser pump source 2 .

[0025] 2. After the seed pulse is cyclically amplified to a certain energy in the...

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 device for generating a high time contrast femtosecond laser pulse and a method for generating the high time contrast femtosecond laser pulse by utilizing the device. The device includes a femtosecond laser oscillator, a laser pump source, a regenerative amplifier, an electro-optical switch, a stretcher, a contrast enhancement module, and a compressor. A low-energy pulseoutput from the femtosecond oscillator is directly sent to the regenerative amplifier for performing pre-amplification, then the pre-amplified pulse is sent to the contrast enhancement module to enhance time contrast, the pulse is broadened by the pulse stretcher and then re-introduced into the regenerative amplifier for amplifying to saturated output and then controlled by the electro-optical switch with a single-channel to enter the pulse compressor, and a femtosecond laser pulse with high time contrast and high energy is finally produced. The device and the method achieve that the high timecontrast laser pulse can be generated with only a single amplifier, and have the characteristics of simple structure, compact structure, high stability, good light spot quality, and the like.

Description

technical field [0001] The invention belongs to the field of ultrafast laser amplifiers, and in particular relates to a method for generating femtosecond laser pulses with high time contrast and a device for realizing the method. Background technique [0002] Due to the invention of chirped pulse amplification (CPA) technology, unprecedented progress has been made in high-power laser systems with ultrafast and ultraintense pulses in the past few decades. Ultrafast ultra-intense pulses and material interactions can accelerate particles (electrons, protons, ions) or generate light sources of various wavelengths (extreme ultraviolet, X-rays, rays, etc.), reducing the light sources that can only be produced by traditional large accelerators to a single sheet Desktop-sized dimensions are generated. [0003] At present, the femtosecond laser system based on CPA technology can reach the peak power of 10PW. When the laser peak power increases, the power of the pre-pulse generated ...

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 Applications(China)
IPC IPC(8): H01S3/00H01S3/11H01S3/08
CPCH01S3/0057H01S3/1115H01S3/11H01S3/08H01S3/08004
Inventor 鲁巍陈培荣洪德昇张颖力赵遵成
Owner 河南省启封新源光电科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com