Linear-cavity optical fiber regenerative amplifier

A regenerative amplifier, linear cavity technology, applied in the field of lasers, can solve problems such as narrowing, and achieve the effect of improving pumping efficiency

Inactive Publication Date: 2010-06-09
CHINA THREE GORGES UNIV +1
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  • Abstract
  • Description
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Problems solved by technology

[0004] However, traditional regenerative amplifiers use laser crystals or laser glass as working materials, such as neodymium glass, Nd:YAG and titanium sapphire crystals. It is made of high-quality material and can be pumped by a flash lamp, so it is easier to obtain a large-energy laser output, but the narrowing of the gain of the neodymium glass is very serious for short pulse amplification, especially in the regenerative amplifier, and the system can only obtain hundreds of femtoseconds. second pulse

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Embodiment Construction

[0022] Such as figure 1 Among them, a linear cavity fiber regenerative amplifier includes a polarization signal source 12, a second reflector 4, a first Pockels cell 5, a film polarizer 6, a second Pockels cell 10, and a linear cavity are provided. Doped optical fiber 11 and dichromatic film 13;

[0023] Polarization signal source 12, half-wave plate 9, first isolator 8, third mirror 7, film polarizer 6, first Pockels cell 5, second mirror 4, second Pockels cell 10. The doped optical fiber 11 and the dichromatic film 13 form an optical path;

[0024] The pump source 15 is in optical communication with the dichroic chip 13 through the second isolator 14 ; firstly, the appropriate length of the pump source 15 and the doped fiber 11 is selected. Different doped fibers correspond to different pump wavelengths: for example, erbium-doped fibers generally use 1480nm or 980nm semiconductor lasers as pumping sources, while ytterbium-doped fibers generally use 975nm, 940nm or 915nm se...

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Abstract

The invention discloses a linear-cavity optical fiber regenerative amplifier, and relates to a laser. Doped fibers are adopted to replace a working substance of the traditional linear-cavity regenerative amplifier, such as laser crystals or glass; and a control circuit can regeneratively amplify signal-pulses with different energies and different wavelengths to acquire the maximum output power automatically, and the manual control of a second pockels cell is not needed any more. In the linear-cavity optical fiber regenerative amplifier, signal light passes through the working substance for multiple times, so the pump light is fully utilized and the pumping efficiency is improved. The linear-cavity optical fiber regenerative amplifier is suitable for obtaining high power or energy polarization pulse light output by passing light pulses through various doped optical fibers.

Description

technical field [0001] The invention relates to a laser, in particular to a linear cavity optical fiber regenerative amplifier which can be automatically controlled to obtain the maximum output energy. It can automatically control the number of round trips of the light pulse in the cavity to obtain the maximum output energy. Background technique [0002] The regenerative amplifier (Regenerative Amplifier) ​​can be used as an effective means to generate high stability, high peak power, and ultrashort synchronous laser pulses, which can provide extremely high gain (~60dB) even at high repetition rates, and introduce The time waveform distortion and additional noise are very small. Therefore, the regenerative amplifier has a very wide application prospect. [0003] In many high-energy laser sources, such as inertial confinement fusion laser (ICF) devices, laser nuclear explosion simulation, etc., since the oscillator of the pulsed laser system can only provide weak seed light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/10H01S3/081
Inventor 刘雁
Owner CHINA THREE GORGES UNIV
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