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Passive mode-locking fiber laser with double-wavelength short pulse output

A fiber laser and ultrashort pulse technology, applied in the field of optical information, can solve the problems of limited application range, difficulty in achieving double pulse synchronization, and inability to control two wavelengths separately

Inactive Publication Date: 2010-10-06
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also some experimental research results published on dual-wavelength ultrashort pulse polarization-maintaining fiber laser generation, but most of them use active mode-locking technology or the interval between the two laser wavelengths is very small, so the application range is limited, or the two wavelengths cannot be controlled separately, making it difficult to achieve Wavelength tuning and double pulse synchronization for two different wavelengths

Method used

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  • Passive mode-locking fiber laser with double-wavelength short pulse output
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  • Passive mode-locking fiber laser with double-wavelength short pulse output

Examples

Experimental program
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Effect test

Embodiment 1

[0058] Embodiment 1: A cavity structure of a polarized dual-wavelength (1.55 μm and 1.064 μm) fiber ultrashort pulse laser, which consists of a first laser cavity end face and a dual-wavelength (1.55 μm and 1.064 μm) tuning cavity, fiber laser gain Dielectric and broadband dual-wavelength splitter, the end face of the second laser cavity and an output coupler, using two different polarization-maintaining rare-earth-doped fibers (Er-doped 3+ and doped Yb 3+ ) as a gain medium, a broadband polarization beam splitter (PBS) is used to separate the lasers in two different polarization (fast and slow axes) directions as wavelength tuning arms for two different oscillation laser wavelengths (1.55 μm and 1.064 μm). Please refer to the attached figure 1 .

[0059] See attached figure 1 , the fiber laser cavity directly uses a blazed grating as a dual-wavelength laser cavity tuning feedback element. The pump laser is coupled into two kinds of polarization-maintaining doped rare eart...

Embodiment 2

[0061] Embodiment 2: A cavity structure of a polarized dual-wavelength (1.55 μm and 1.064 μm) fiber optic ultrashort pulse laser, which is composed of a first laser cavity reflection end face and a dual-wavelength (1.55 μm and 1.064 μm) tuning cavity, fiber laser Gain medium, broadband dual-wavelength splitter, reflective end face of the second laser cavity and output coupler, using two different polarization-maintaining rare-earth-doped fibers (Er-doped 3+ and doped Yb 3+ ) as a gain medium, a broadband polarization beam splitter (PBS) is used to separate the lasers in two different polarization (fast and slow axes) directions as wavelength tuning arms for two different oscillation laser wavelengths (1.55 μm and 1.064 μm). Please refer to the attached figure 2 ~ attached Figure 4 .

[0062] See attached figure 2 , the first fiber laser cavity directly uses a broadband plane reflector as the dual-wavelength (1.55 μm and 1.064 μm) laser output coupler and the second cavi...

Embodiment 3

[0065] Embodiment 3: A cavity structure of a polarized dual-wavelength (1.55 μm and 1.064 μm) fiber ultrashort pulse laser, which consists of the first reflective end face of the laser cavity and a dual-wavelength (1.55 μm and 1.064 μm) tuning cavity, fiber laser The gain medium, the broadband dual-wavelength splitter, the second reflective end face of the laser cavity and the output coupler are composed of two different polarization-maintaining rare-earth-doped fibers (Er-doped 3+ and doped Yb 3+ ) as a gain medium, a broadband polarization beam splitter (PBS) is used to separate the lasers in two different polarization (fast and slow axes) directions as wavelength tuning arms for two different oscillation laser wavelengths (1.55 μm and 1.064 μm). Please refer to the attached Figure 5 .

[0066] See attached Figure 5 :

[0067] The fiber laser cavity directly adopts the blazed grating as the tuning feedback element of the dual-wavelength laser cavity. The two pump lase...

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Abstract

The invention discloses a passive mode-locking fiber laser with a double-wavelength short pulse output. The invention has the characteristics of high stability, high efficiency, high power, high pulse repetition rate, synchronous passive laser impulse, single-line polarization, tunability, double wavelength and ultrashort pulse output. The ultrashort pulse fiber laser of the invention uses two polarization-preserving rare-earth doped (Er3+ / doped Yb3+) fibers as laser grain media, adopts a broadband polarization beam splitter spectrum and a broadband chirp polarization-preserving fiber grating and the like as cavity surface reflecting elements and chromatic dispersion compensation elements and utilizes a semiconductor saturable absorber as mode-locked elements and the like to achieve double-wavelength passive synchronous ultrashort pulse mode-locked fiber laser output. The passive mode-locking fiber laser with the double-wavelength short pulse output is a fiber laser with a novel structure of double-wavelength mode-locked ultrashort pulse output, which can achieve full-fiber.

Description

technical field [0001] The patent of the present invention relates to a fiber laser, in particular to a fiber laser with high stability, high efficiency, high power, high pulse repetition rate, passive laser pulse synchronization, single linear polarization, tunable, dual wavelength (1.55μm and 1.064μm), super Passive mode-locking of short optical pulse output by doping E r 3+ / mixed with Y b 3+ Fiber laser structure. It is suitable for pump-probe ultrafast laser spectroscopy experiments, coherent anti-Stokes Raman scattering microscopy, harmonic and combined frequency generation, precise laser synchronization, and direct difference frequency method to generate ultrashort pulse mid-infrared laser radiation for Pump-probe molecular systems, environmental monitoring and microwave photonics and biophysical detection and many other fields of scientific research and engineering. The idea of ​​this patent can also be used in the design of continuous wave high-power dual-wavele...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/091H01S3/094H01S3/08H01S3/16H01S3/101H01S3/10G02B6/255G02B6/293G02B6/02
Inventor 刘东峰王钦华余建军
Owner SUZHOU UNIV
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