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

Ultra-short resonant cavity high repetition frequency fiber laser with adjustable repetition frequency

A technology of ultra-short resonant cavity and fiber laser, which is applied in the direction of laser, laser parts, structure/shape of optical resonator, etc., to achieve the effect of high resource utilization, economical and time cost minimization

Pending Publication Date: 2022-07-29
SOUTH CHINA UNIV OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a high repetition rate fiber laser, its fundamental frequency repetition rate > 1 GHz means that the length of its resonant cavity will be limited to cm order, so the cavity length change of mm order will bring the repetition frequency change of MHz or even GHz order , and for a high repetition rate laser that is an ultrashort resonator, it is difficult to adjust the small amount of change in the resonator by using a traditional fiber delay line

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
  • Ultra-short resonant cavity high repetition frequency fiber laser with adjustable repetition frequency
  • Ultra-short resonant cavity high repetition frequency fiber laser with adjustable repetition frequency
  • Ultra-short resonant cavity high repetition frequency fiber laser with adjustable repetition frequency

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] like figure 1 As shown, an ultra-short resonant cavity high-repetition fiber laser with adjustable repetition frequency provided in this embodiment includes a pump source 3, a wavelength division multiplexer 2, an optical isolator 4, and an ultra-short resonator with adjustable repetition frequency. Resonator 1, the wavelength division multiplexer 2 is used to couple the pump light generated by the pump source 3 into the ultra-short resonator cavity 1 with tunable repetition frequency and output the generated signal light to the ultra-short resonator cavity 1 with tunable repetition frequency. Outside the short resonant cavity 1, the optical isolator 4 is connected to the wavelength division multiplexer 2 to prevent the influence of the returning light.

[0033] like figure 2 As shown, the ultra-short resonant cavity 1 with adjustable repetition frequency includes: a first graded index lens 6, a second graded index lens 8, a ferrule 10, a sleeve 7, a gain fiber 9, and...

Embodiment 2

[0044] like image 3 As shown, the ultra-short resonant cavity 1 with adjustable repetition frequency provided in this embodiment includes: a first graded index lens 6, a second graded index lens 8, a ferrule 10, a sleeve 7, a gain fiber 9, a semiconductor optical fiber Saturable absorption mirror 5 and dielectric film 11 .

[0045] The difference between the ultrashort resonant cavity 1 with adjustable repetition frequency provided in this embodiment and the embodiment 1 is that the semiconductor saturable absorption mirror 5 is arranged on one end face of the ferrule 10, and the other end of the ferrule 10 is connected to the first One end of the gradient index lens 6 is connected, the other end of the first gradient index lens 6 is connected to one end of the second gradient index lens 8 through the sleeve 7 at intervals, and the other end surface of the second gradient index lens 8 is provided with a Dielectric film 11 .

[0046] In practical applications, the pump sourc...

Embodiment 3

[0051] like Figure 4 As shown, the ultrashort resonant cavity 1 with adjustable repetition frequency provided in this embodiment includes: a first gradient index lens 6, a second gradient index lens 8, a first ferrule 10, a second ferrule 14, a first Sleeve 7, second sleeve 12, third sleeve 13, first gain fiber 9, second gain fiber 15, semiconductor saturable absorption mirror 5 and dielectric film 11;

[0052] The difference between the ultrashort resonant cavity 1 with adjustable repetition frequency provided in this embodiment is that the semiconductor saturable absorption mirror 5 is arranged on one end face of the first ferrule 10 , and the other side of the first ferrule 10 is different from the embodiment 1. One end is connected to one end of the first gradient index lens 6 through the second sleeve 12 , the second gradient index lens 8 is connected to the second ferrule 14 through the third sleeve 13 , and the dielectric film 11 is arranged on the second ferrule 14 . ...

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

PropertyMeasurementUnit
The inside diameter ofaaaaaaaaaa
Login to View More

Abstract

The invention discloses a repetition frequency adjustable ultra-short resonant cavity high repetition frequency fiber laser which comprises a pumping source, a wavelength division multiplexer, an optical isolator and a repetition frequency adjustable ultra-short resonant cavity. The wavelength division multiplexer is used for coupling pump light generated by the pump source into the ultra-short resonant cavity with the adjustable repetition frequency and outputting generated signal light out of the ultra-short resonant cavity with the adjustable repetition frequency, and the optical isolator is connected with the wavelength division multiplexer. The ultra-short resonant cavity with the adjustable repetition frequency comprises a first gradient refractive index lens, a second gradient refractive index lens, an insertion core, a sleeve, a gain optical fiber, a semiconductor saturable absorption mirror and a dielectric film. According to the invention, the cavity length of the ultra-short resonant cavity is changed by adjusting the distance between the first gradient refractive index lens and the second gradient refractive index lens, so that the high repetition frequency passive mode-locked laser pulse output with the adjustable repetition frequency is obtained.

Description

technical field [0001] The invention belongs to the field of high repetition frequency passive mode-locking fiber lasers, in particular to an ultra-short resonant cavity high repetition frequency fiber laser with adjustable repetition frequency. Background technique [0002] High repetition frequency laser light sources have very important research value and application potential in many fields such as fine spectral measurement, high-speed optical sampling, high-quality optical communication, fine micromachining, and nonlinear biological imaging. At the same time, compared with solid-state lasers, semiconductor lasers, gas lasers, dye lasers, etc., fiber lasers have the outstanding advantages of compact structure, low production cost, strong heat dissipation, and high pump conversion efficiency, making them suitable for scientific research and industrial processing. It is favored and has become the first choice for researching high reliability and high pulse quality laser so...

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): H01S3/106H01S3/067H01S3/08
CPCH01S3/067H01S3/08004H01S3/106
Inventor 韦小明凌琳文晓晓王文龙杨中民
Owner SOUTH CHINA UNIV OF TECH