Narrow pulse fiber amplifier

A fiber amplifier, narrow pulse technology, used in lasers, laser parts, optics, etc., can solve the problem that the repetition frequency cannot be freely changed, the pulse repetition frequency is high, achieve high peak power levels, increase peak power, and avoid stimulated distribution. The effect of the Brillouin scattering effect

Inactive Publication Date: 2007-08-08
WUXI RES INST OF APPLIED TECH TSINGHUA UNIV +1
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the above-mentioned problem that the pulse repetition frequency is too high or the repetition frequency cannot be changed freely

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
  • Narrow pulse fiber amplifier
  • Narrow pulse fiber amplifier
  • Narrow pulse fiber amplifier

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

Specific embodiment:

[0026] The system structure shown in Figure 1, where the seed source laser 1 uses 1W average power output semiconductor pump mode-locked Nd:YVO 4 The solid-state laser has a wavelength of 1064 nm, the pulse width of the seed pulse 9 is 100 ps, ​​and the repetition frequency is 100 MHz. The pulse selector 2 uses an acousto-optic modulator and a matching radio frequency power supply to deflect unnecessary pulses on the optical path and be absorbed by the absorption box 3. The pulse selector 2 has a repetition frequency of 500 kHz, and the duration of the pulse selector 2 in the open state is 100 ns, and contains 10 mode-locked pulses within this duration. The selected pulse sequence 10 is coupled into the core of the gain fiber 5 through the seed light coupling system 4. The gain fiber 5 uses a Yb-doped double-clad polarization-maintaining fiber with a core diameter of 20 μm and an inner cladding diameter of 400 μm. The pump absorption coefficient of 976 nm is ...

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

A narrow pulse fiber amplifier belongs to the laser technology field. The fiber amplifier contains the seed source laser, the seed optical coupling system, the gain fiber, the pumped source laser and the pumped coupling system, and the feature is that between the seed source laser and the gain fiber adding the pulse issued by the seed source laser to choose the pulse selector. The selected pulse sequence has the arbitrarily changing repetition frequency, and duration, through the high gain amplification of the fiber amplifier to obtain high-power, narrow pulse width laser pulse output. The invention has the advantages that it makes full use of the narrow pulse width of the seed source laser and the wide gain spectrum and high gain of the fiber amplifier, and adding the pulse selector to make the pulse repetition frequency and duration to be free to change. The invention can obtain narrow pulse width pulse sequence of low repetition frequency, whose single pulse energy and peak power can be significantly improved, but also avoiding the stimulated Brillouin scattering effect.

Description

technical field [0001] The invention relates to an optical fiber amplifier, in particular to a pulsed optical fiber amplifier, belonging to the technical field of lasers. Background technique [0002] Pulsed fiber amplifiers have many advantages such as high efficiency, high power, high gain, simple thermal control management, and good beam quality. They can generate pulses with narrow pulse width and high peak power. Broad application prospects. [0003] Pulsed fiber amplifiers require a low-power pulsed laser as a seed source for amplification. Commonly used seed source lasers include mode-locked lasers and Q-switched lasers. Mode-locked lasers can generate pulses with very narrow pulse widths, which are widely used in industry, scientific research and other fields. However, due to the principle of mode-locking, the pulse repetition frequency is inversely proportional to the laser cavity length. Long, so the repetition rate of the mode-locked laser is very high, generall...

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): G02F1/39G02F1/35
CPCH01S3/06754H01S2301/03
Inventor 巩马理闫平叶昌庚李晨柳强黄磊张海涛
Owner WUXI RES INST OF APPLIED TECH TSINGHUA UNIV
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