Oscillator type free electron laser three-hole coupling output method and device

A coupling output and oscillator technology, which is applied in the field of oscillator type free electron laser three-hole coupling output, can solve the problems of inability to carry out scientific experiments and serious influence, and achieves the improvement of free electron laser power, easy fabrication, and low fabrication cost. Effect

Pending Publication Date: 2021-01-29
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

Especially when the spectral gap is at some key wavelengths, the impact is more serious, which may cause many scientific experiments to be unable to be carried out

Method used

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  • Oscillator type free electron laser three-hole coupling output method and device
  • Oscillator type free electron laser three-hole coupling output method and device
  • Oscillator type free electron laser three-hole coupling output method and device

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. The content not described in detail in the embodiments of the present invention belongs to the prior art known to those skilled in the art.

[0021] Such as figure 1 As shown, a kind of oscillator-type free electron laser three-hole coupling output device of the present invention comprises an upstream reflector 1, an undulator 2, an optical waveguide 3, a downstream reflector 4, a three-hole array 5 and an electron beam 6; The reflector 1 and the downstream reflector 4 are both placed in a high vacuum chamber and connected to the optical waveguide 3 through a vacuum pipe. The line between the centers of the two coincides with the line between the focal points to form an optical resonant cavity. The optical waveguide 3 is placed symmetrically on the at the center of the optical cavity. The upper and lower magnetic arrays of the undulator 2 are placed o...

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Abstract

The invention relates to an oscillator type free electron laser three-hole coupling output method and device. By adopting the oscillator type free electron laser three-hole coupling output method, three circular holes are formed in a downstream reflector of an optical resonant cavity, wherein the position distribution and size of the three circular holes are determined according to the distribution of a lateral light field in the resonant cavity, when free electron laser works on the spectral gap wavelength, a saturated light field in the resonant cavity is affected by the optical waveguide toform three or more light field power peaks in the vertical direction, under the light field distribution, three small holes are formed in a downstream cavity mirror of the optical resonant cavity andare arranged in the vertical direction, the middle small hole is located in the center of the reflector, the positions of the small holes in the two sides correspond to the positions of two light field power peak values adjacent to the center of the reflector, and the diameters of the small holes are determined according to light field distribution on the reflector of the spectral gap wavelengthand are generally not larger than the diameter of the center hole. Under the condition that the coupling output power of the wavelength outside the spectral gap is not affected, the problem that the coupling output power at the spectral gap is low is greatly solved, and therefore the overall performance of an oscillator type free electron laser device is improved.

Description

technical field [0001] The invention relates to an oscillator-type free electron laser three-hole coupling output method and device, which belongs to the field of free electron lasers and can be applied to oscillator free electron lasers in infrared and terahertz bands. Background technique [0002] Oscillator-type free electron lasers have been widely used in the world for many years as a scientific research light source. They are mainly used to generate lasers in the infrared and terahertz bands. Most of the infrared and terahertz band free electron laser devices currently operating in the world also use oscillator mode. Oscillator-type free-electron laser sources can provide continuously adjustable wavelength, quasi-monochromatic, high peak power laser pulses, which are applied to scientific researches such as condensed matter physics, physical chemistry and biophysics (B.N.Murdin,Contemporary Physics,50,2( 2009), O'Shea, P G, and H P Freund, Science 292, 5523 (2001)). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S4/00
CPCH01S4/00
Inventor 李和廷朱云鹏贾启卡赵周宇
Owner UNIV OF SCI & TECH OF CHINA
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