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Method for producing Gauss frequency doubling light pulse

A generation method and technology of frequency-doubling light, applied in optics, nonlinear optics, instruments, etc., can solve the problems of complex structure, high price, weak signal, etc., and achieve the effect of high conversion efficiency, few links and low cost.

Inactive Publication Date: 2007-12-05
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

(L.J.Waxer, V.Bagnoud, I.A.Begishev, M.J.Guardalben, J.Puth, J.D.Zuegel, "High-conversion-efficiency optical parametric chirped-pulseamplification system using spatiotemporally shaped pump pulses" Opt Lett. 28, 1245 (2003)) In the first method, the time shaping device is first used to shape the signal. Since the signal after shaping is very weak (pJ), it must be amplified by the subsequent stage before the frequency can be multiplied (here temporarily referred to as the time shaping-amplification-frequency technology). Many, and need the waveguide modulator with relatively high price at present, the overall structure is relatively complex, and the price is high, its frequency multiplication stability depends on the stability of the fundamental frequency light, and the frequency multiplication output fluctuates between 4% and 5%.

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  • Method for producing Gauss frequency doubling light pulse
  • Method for producing Gauss frequency doubling light pulse

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with embodiment.

[0046] A method for generating Gaussian frequency-multiplied optical pulses with high stability and high conversion efficiency, characterized in that the method comprises the following steps:

[0047] ① Select the working light intensity of the fundamental frequency and its variation range and the frequency doubling crystal, substitute the relevant parameters into the normalized frequency doubling coupling equation group, and determine the effective working length of the frequency doubling crystal in the frequency doubling stable region through computer simulation calculations ;

[0048] ②Select the working mode of the frequency doubling crystal, and build the corresponding frequency doubling output device;

[0049] ③Use an oscilloscope to detect the incident fundamental frequency light intensity and the outgoing double frequency light intensity respectively;

[0050] ④Adjust the v...

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Abstract

The invention relates to a method to produce gauss double frequency light impulse that adopts the method of controlling the starting base frequency light intensity and the double frequency effective length to make the energy variation range of double frequency be lower than that of basal frequency. The invention is easy to realize and is convenient to adjust.

Description

technical field [0001] The invention relates to a high-stable, high-conversion-efficiency Gaussian frequency-multiplied optical pulse and a method for generating a nearly flat-top high-order Gaussian frequency-multiplied optical pulse. Background technique [0002] Optical parametric chirped pulse amplification technology has become the focus of research in recent years. Realizing the stable output of high-power ultrashort pulses has become a very important issue. The key is to improve the output stability of the optical parametric amplifier. The research proves that if a high-order Gaussian green light source with a stable near-flat-top pulse shape is used as the pumping source, the output stability of the signal light obtained after optical parametric amplification will be greatly improved. [0003] In order to obtain a stable high-order Gaussian pulse-shaped green light output, according to literature reports, the currently adopted scheme is: first time-shape the fundam...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/35
Inventor 康俊陈绍和韦辉朱健强
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI