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Multi-pulse superimposing amplifier and femtosecond laser parameter chirped-pulse amplification laser

A multi-pulse and amplifier technology, applied to lasers, laser components, phonon exciters, etc., can solve the problems of inability to adjust the time length and spectrum width of pump light, complex structure, etc., and achieve supercontinuum stability and narrow spectrum , the effect of increasing flexibility

Inactive Publication Date: 2006-02-08
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this device solves the problem of synchronizing the output pulses of different ultrashort pulse lasers during operation and enables the pump light to efficiently amplify the signal light, it still cannot adjust the time length and spectrum width of the pump light, and the structure is complex

Method used

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  • Multi-pulse superimposing amplifier and femtosecond laser parameter chirped-pulse amplification laser
  • Multi-pulse superimposing amplifier and femtosecond laser parameter chirped-pulse amplification laser
  • Multi-pulse superimposing amplifier and femtosecond laser parameter chirped-pulse amplification laser

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Embodiment 1

[0031] The structure of the multi-pulse superposition amplifier described in this embodiment is as follows figure 1As shown, it is composed of Faraday 1, 45° rotor 2, first high reflection mirror 3, gain medium I 4, dielectric film polarizer 5, Pockels cell 6 and second high reflection mirror 7, each of the above optical elements can be Bought from the market. Among the above optical components, the spectral gain bandwidth of the gain medium I4 is about 0.5nm, and its amplified peak wavelength matches the central wavelength of the pulse entering the resonator; the Pockels cell 6 uses a KDP crystal, and its λ / 4 delay voltage is 700 Volt. Faraday 1 and 45° rotor 2 form an optical switch for the ultrashort pulse train to enter the resonator, and the first high reflection mirror 3, gain medium I4, dielectric film polarizer 5, Pockels cell 6 and second high reflection mirror 7 form a pair A resonant cavity in which ultrashort optical pulse trains perform pulse superposition and s...

Embodiment 2

[0035] The structure of the multi-pulse superposition amplifier described in this embodiment is as follows figure 2 As shown, the difference with Embodiment 1 is: (1) an etalon 8 is added, and the etalon is a constituent element of a resonant cavity, which performs spectral filtering on an ultrashort optical pulse, and its passband bandwidth is 0.02nm, and the transmittance The peak center wavelength is 1053nm. (2) The etalon 8, the gain medium I4, the Pockels cell 6 and the dielectric film polarizer 5 are sequentially placed between the two end faces of the resonant cavity formed by the first high reflection mirror 3 and the second high reflection mirror 7.

[0036] The structure of the femtosecond laser parametric chirped pulse amplification laser described in this embodiment is as follows Figure 6 As shown, the difference from Embodiment 1 is: (1) beam splitter 10 will input the center wavelength as λ 0 The ultrashort pulse train is divided into a center wavelength λ 0...

Embodiment 3

[0038] The structure of the multi-pulse superposition amplifier described in this embodiment is as follows image 3 As shown, the difference from Embodiment 1 is: (1) gain medium II9 is ​​arranged on the derivation optical path of dielectric film polarizer 5, which further amplifies the superimposed flat-top pulse derived from the resonator, and its spectral gain bandwidth is 0.5 nm. (2) Dielectric film The polarizer 5 , the Pockels cell 6 and the gain medium I4 are sequentially placed between the two end faces of the resonant cavity formed by the first high reflection mirror 3 and the second high reflection mirror 7 .

[0039] The structure of the femtosecond laser parametric chirped pulse amplification laser described in this embodiment is as follows Figure 7 As shown, the difference with Embodiment 1 is: (1) inject 30 central wavelengths to the multi-pulse superposition amplifier 12 and be λ 1 The ultrashort pulse of the multi-pulse superposition amplifier is adjusted to...

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Abstract

Disclosed is a multi impulse-adding amplifier. Femtosecond laser parameter chirp impulse laser amplifier comprise beam divider, frequency converter, multi-pulse adding amplifier, frequency doubler, impulse stretcher, delay lines, dichroic mirror and non-linear crystal. The pumping light and light signal are generated from the same light impulse, controlling the optical path difference via delay lines and realizing full synchronizing.

Description

technical field [0001] The invention belongs to the field of ultrashort pulse laser amplification, and in particular relates to a multi-pulse superposition amplifier capable of performing pulse superposition and spectrum narrowing on ultrashort pulse trains and a femtosecond laser parametric chirped pulse amplifying laser for generating chirped pulse amplified signal light. Background technique [0002] High-power ultrashort pulse lasers are widely used in many fields such as laser medicine, strong field physics experiments, laser precision processing, and military affairs. At present, optical parametric chirped pulse amplification (OPCPA) technology is one of the main methods to obtain high-power ultrashort pulses. [0003] Chinese patent ZL 00105431.7 discloses an ultrashort pulse chirped optical parametric laser, which consists of a chirped optical parametric generator and a femtosecond optical parametric amplifier; an electro-optic beam scanner, ...

Claims

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Application Information

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IPC IPC(8): H01S3/00
Inventor 冯国英马再如欧群飞
Owner SICHUAN UNIV
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