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

Method for generating higher harmonic wave in cavity

A technology of high-order harmonics and inner cavity, which is applied in the direction of laser components, instruments, electrical components, etc., can solve the problems of unfavorable and wide high-order harmonics, generally tens of femtoseconds, etc., and achieves simple structure and favorable The effect of higher harmonics

Inactive Publication Date: 2007-01-31
EAST CHINA NORMAL UNIV
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, due to the limitation of the resonator on the dispersion control, the pulse width of the laser acting on the nonlinear medium is usually relatively wide, generally tens of femtoseconds, which is unfavorable for the acquisition of high-order harmonics

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 for generating higher harmonic wave in cavity
  • Method for generating higher harmonic wave in cavity
  • Method for generating higher harmonic wave in cavity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as image 3 As shown, the method used in this program is to add a confocal cavity composed of M4 and M5 into the four-mirror laser cavity composed of four cavity mirrors M1, M2, M3, OC and laser gain medium T, and the non- A linear medium is placed at the focal point of the confocal cavity. When the intracavity laser is oscillated and mode-locked to generate pulsed light, the laser peak power at the nonlinear medium N in the cavity reaches 10 14 W / cm 2 When the high-order harmonics are emitted. The high-order harmonics can reach the detection device after being reflected by the Brewster plate B.

[0030] image 3 The middle marks M1, M2, M4, and M5 are concave mirrors coated with a broadband high-reflection film of 650-1000nm, wherein the radii of curvature of M1 and M2, M4 and M5 are respectively the same, and the radii of curvature of the four concave mirrors in this embodiment Both are 100mm. M3 is a flat mirror coated with a broadband high-reflection film...

Embodiment 2

[0032] Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 lies in the addition of two flat high-reflection mirrors M6 and M7, and the laser can be reflected multiple times on these two mirrors, thus lengthening the actual cavity length of the laser and reducing the repetition rate , since the optical peak power is inversely proportional to the repetition rate, a higher peak power can be obtained. The working principle of this embodiment is the same as that of Embodiment 1.

[0033] Those skilled in the art can obviously realize that the selection of the structure and parameters of the laser cavity is not limited to the above content, as long as the stability of the laser cavity can be maintained and the spot on the nonlinear medium is small enough and the peak power of the light is sufficient. Big enough. In addition, as long as the carrier phase of the above-mentioned device is stabilized, an ultraviolet light comb can be obtained. Since th...

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 the direction of ultrafast laser technique, concretely relating to an intracavity higher harmonics generating method, directly placing nonlinear medium in a laser oscillator to obtain higher harmonics, and able to obtain few-cycle laser pulses because in the laser oscillator, the dispersion caused by cavity mirror and medium can be perfectly compensated, thus more beneficial to generation of higher harmonics, where the few-cycle laser pulses can obtain UV comb on the condition of locking carrier wave phase and can obtain single attosecond pulses.

Description

technical field [0001] The invention relates to the direction of ultrafast laser technology, in particular to a method for generating high-order harmonics in an inner cavity. Background technique [0002] The scientific research of ultra-intensive and ultra-short lasers focuses on the innovative development of ultra-intense and ultra-short lasers, the interaction between ultra-intense and ultra-short lasers and matter, and the frontier foundations in interdisciplinary and related high-tech fields. It is a very important scientific frontier field in science and even modern science. In this field, breakthroughs have been made in the study of precision spectroscopy. The technology of precise control of the light field in the time domain and frequency domain is beginning to advance to ultra-short wavelength bands such as extreme ultraviolet (XUV) and soft X-rays. Since the measurement of He + The high-resolution laser spectrum of the 1s-2s transition may eventually produce ato...

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): H01S3/109G02F1/37G02F1/35
Inventor 韩晓红曾和平
Owner EAST CHINA NORMAL UNIV
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