Unlock instant, AI-driven research and patent intelligence for your innovation.

A 1.7μm all-fiber high-energy femtosecond laser system

A femtosecond laser and high-energy technology, applied in the direction of lasers, laser components, phonon exciters, etc., can solve the problems of complex assembly, poor stability, and low output power, and achieve easy assembly, good stability, and compact structure Effect

Active Publication Date: 2022-02-01
广州扬名激光技术有限公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a 1.7 μm all-fiber high-energy femtosecond laser system for the problems of complex assembly, low output power, and poor stability of existing 1.7 μm band lasers

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
  • A 1.7μm all-fiber high-energy femtosecond laser system
  • A 1.7μm all-fiber high-energy femtosecond laser system
  • A 1.7μm all-fiber high-energy femtosecond laser system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] Such as figure 1 As shown, the present invention provides a 1.7 μm all-fiber high-energy femtosecond laser system, which consists of a seed source (1-7), an acousto-optic modulator 8, a pulse stretcher 9, a first single-mode fiber amplifier 10, and a band-pass filter The device 11, the second single-mode fiber amplifier 12, the double-clad fiber amplifier (13-15), the cladding power stripper 16, and the pulse compressor 17 are composed, and each part is sequentially connected in the above order by means of optical fiber fusion.

[0035] The seed source of the laser is composed of negative dispersion fiber 1, polarization controller 2, positive dispersion fiber 3, first single-mode pump 4, optical integration module 5, Tm / Tb-doped fiber 6 and first isolator 7, in a ring shape Cavity structure, each part is connected by optical fiber fusion.

[0036] The negative dispersion fiber 1 and the positive dispersion fiber 3 play the role of dispersion management. When the tota...

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 1.7 μm all-fiber high-energy femtosecond laser system, which belongs to the field of fiber lasers and includes: a seed source, an acousto-optic modulator, a pulse stretcher, a first single-mode fiber amplifier, a band-pass filter, and a second Two single-mode fiber amplifiers, double-clad fiber amplifiers, cladding power strippers, and pulse compressors; the signal light output from the seed source is modulated by an acousto-optic modulator, and optical amplification is performed through amplifiers at all levels. The method of dispersion management stretches and compresses the pulse, and finally obtains a 1.7μm high-power ultrashort pulse laser with adjustable period and duty cycle. The invention is composed of all-fiber devices, with compact structure, easy assembly and good stability; the period and duty ratio of the signal light pulse can be flexibly changed through programming; the signal light output from the seed source is optically amplified through amplifiers at all levels and adopted The method of dispersion management stretches and compresses the pulse to obtain high-power ultrashort pulse laser.

Description

technical field [0001] The invention relates to the technical field of fiber lasers, in particular to a 1.7 μm all-fiber high-energy femtosecond laser system. Background technique [0002] In recent years, lasers in the 1.7–2.1 μm wavelength range have become a research hotspot for scientists due to their outstanding advantages in applications in various fields such as lidar, bioscience, optical sensing, and industrial manufacturing. Compared with the working wavelength of traditional biophotonics, the scattering effect of 1.7 μm laser in biological tissue is weak, and the light absorption of water in this band is less, and the absorption peaks of fat and collagen are also in this band. Therefore, 1.7μm laser has broad application prospects in biological imaging, and the research on 1.7μm laser technology is of great significance. [0003] However, the existing 1.7 μm band lasers have problems such as complex assembly, low output power, and poor stability, which limit the r...

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 Patents(China)
IPC IPC(8): H01S3/00H01S3/067H01S3/094H01S3/106H01S3/11
CPCH01S3/1068H01S3/1112H01S3/06754H01S3/06725H01S3/094065H01S3/06716H01S3/0057
Inventor 杨中民吴经锋文晓晓孙悦怡韦小明
Owner 广州扬名激光技术有限公司