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Optical parametric amplifier

A technology of amplifying device and optical parameters, applied in optics, nonlinear optics, lasers, etc., can solve the problem of not providing magnification, and achieve the effect of simple structure, wide application range and convenient operation

Inactive Publication Date: 2003-05-07
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the prior art, British I.N. Ross (I.N.Ross) and others discussed the amplification process and theory of optical parameters in the article "Principles and possibilities for optical parametric chirped pulse amplifiers", but does not provide a practical device with higher magnification

Method used

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Embodiment Construction

[0024] Such as figure 1 In the device shown, the signal light source 1 is a solid titanium sapphire laser pumped by an argon (Ar) ion gas laser with an output wavelength of λ s = Signal light G of 800nm ​​to 1.16μm s . pump light G p It is the output wavelength λ of yttrium aluminum garnet (YAG) solid-state laser after frequency doubling p =532nm, the synchronous controller 3 constitutes the adjustment signal light G with two pulse delayers s with pump light G p Synchronously, the pump light G p Light intensity I p =380MW / cm 2 , the amplifying element 4 is a negative uniaxial KDP nonlinear crystal (length L=13mm), the signal light G s wavelength lambda s =1.06μm, signal light G s with pump light G p The two optical axes O 1 o 1 with O 2 o 2 The included angle α=0.0034rad, such as figure 2 Curve 1 is shown. θ=37°, signal light G s Energy s =200pJ, the spot diameter of the nonlinear crystal reaching the amplification element 4 is 1mm, the pulse width is 200ps...

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Abstract

An optical parametric amplifier for amplifying the weak signal light by more than 1000 times is composed of amplifying element made of non-linear crystal, laser device as both signal light source and pump light source and synchronizing controller. The light intensity of pump light is higher than that of signal light, but its wavelength is shorter than that of signal light. The optical axis of signal light is perpendicular to the incident surface of amplifying element and has a non-zero included angle with the optical axis of pump light. The propagation direction of signal light in amplifying element has a non-zero phase match angle with the optical axis of crystal of amplifying element.

Description

Technical field: [0001] The invention is an optical parameter amplification device. It is mainly used to amplify the light intensity of weak optical signals. Background technique: [0002] In the prior art, British I.N. Ross (I.N.Ross) and others discussed the amplification process and theory of optical parameters in the article "Principles and possibilities for optical parametric chirped pulse amplifiers", However, a practical device with higher magnification is not provided. Invention content: [0003] The object of the present invention is to provide an optical parametric amplification device capable of amplifying the light intensity of weak laser signal light. However, the amplifying device with simple structure and easy operation of the present invention can obtain signal light with desired amplified light intensity. [0004] The optical parametric amplification device of the present invention, such as figure 1 As shown, including, the core element is the amplifyi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/39H01S3/10
Inventor 金石琦徐至展杨晓东冷雨欣彭家晖
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI