Off-axis eight-pass laser amplification device
A laser amplification, off-axis technology, applied in the field of lasers, can solve the problems of low energy utilization rate of laser amplifiers, and achieve the effect of improving beam quality and energy utilization rate
Active Publication Date: 2017-09-22
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
View PDF8 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Aiming at the problems existing in the above-mentioned prior art, the present invention provides an off-axis eight-pass laser amplifying device, which solves the problem of low energy utilization of traditional laser amplifiers while ensuring the signal-to-noise ratio of the output laser
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0027] This example figure 1 As shown, the injection laser is injected from the left end, after passing through the first polarization beam splitter (1), the polarization state changes to P polarization, and after passing through the half-wave plate (2) and the first 45° Faraday rotator (3), the polarization state It is still P polarization, then enters through the second polarization beam splitter prism (4) and is made up of the first 0° reflector (11), the second 0° reflector (13), the third 0° reflector and the optical elements in between In the eight-pass amplifying cavity, the P polarized light is output from the second dichroic prism (4) after eight times of amplification, and after passing through the half-wave plate (2) and the first 45° Faraday rotator (3) again, The polarization state becomes S polarization, reflected from the first polarization beam splitter prism (1), then passes through the second 45° reflector (15) and the third spatial filter (16) and is output....
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
Login to View More Abstract
The invention discloses an off-axis eight-pass laser amplification device. The off-axis eight-pass laser amplification device consists of a polarization splitting prism, a half-wave plate, a 45-degree faraday rotator, an electro-optical switch, a spatial filter, a laser amplification head, a 0-degree reflecting mirror and a 45-degree reflecting mirror. Pulse laser to be amplified is injected into the off-axis eight-pass laser amplification device, and passes through a laser amplifier for eight times under the control of the polarization splitting prism, the half-wave plate, the 45-degree faraday rotator, the electro-optical switch and the reflecting mirrors to realize eight-pass amplification; and meanwhile, off-axis amplification is realized under the control of the spatial filter and a reflecting device. Through adoption of the off-axis eight-pass laser amplification device, the energy extraction efficiency of the laser amplifier is increased remarkably under the condition of not influencing the signal-to-noise ratio of output pulse, and the energy stability of the laser amplifier is enhanced. The off-axis eight-pass laser amplification device has important application in high-power laser devices.
Description
technical field [0001] The invention relates to the technical field of lasers, in particular to an off-axis eight-pass laser amplifying device. Background technique [0002] High-power solid-state lasers have a wide range of applications in the fields of material processing, particle acceleration, strong X-ray generation, and laser inertial confinement fusion. Laser amplifiers, as an important part of them, have attracted much attention. Due to the characteristics of the laser material itself, when the laser passes through the laser material with gain in a single pass, most of the energy is lost in the form of heat and spontaneous radiation, and the energy extraction efficiency is very low, which seriously affects the energy efficiency of the entire device. To this end, scholars have studied how to let the laser pass through the laser material multiple times, that is, multi-pass amplification, to achieve full extraction of energy. The current multi-pass laser amplification ...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/10H01S3/106
CPCH01S3/10023H01S3/106Y02A90/10
Inventor 谢旭东姚轲高松唐军范琛陈远斌陈林刘勇刘建国卢振华王琳郑奎兴粟敬钦胡东霞朱启华郑万国
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS