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Self-frequency-conversion terahertz parametric oscillator

A terahertz parametric and self-converting technology, which is applied in the field of terahertz radiation devices, can solve the problems of difficult miniaturization of the system and complex structure of terahertz parametric oscillators, and achieve the effects of good stability, convenient design and simple structure

Active Publication Date: 2015-04-08
TIANJIN UNIV
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Problems solved by technology

[0006] In order to overcome the deficiencies of the existing technology and solve the problem that the structure of the terahertz parametric oscillator is complex and the system is difficult to miniaturize

Method used

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Embodiment Construction

[0018] The technical solution adopted in the present invention is: a compact self-variable frequency terahertz parametric oscillator, including a pump source (1), a self-variable frequency crystal (2), a resonant cavity (3), and a terahertz wave output mirror (4) . The pump light emitted by the pump source (1) is injected into the self-variable crystal (2), and the activated particles in the self-variable crystal (2) absorb the pump light to generate particle population inversion, and generate laser light under the feedback of the resonant cavity (3) oscillation. At the same time, the self-variable frequency crystal (2) has a nonlinear effect, which converts the frequency of the oscillating laser, and converts the laser light to the terahertz band through parametric oscillation under the action of the same resonator (3), and the generated terahertz wave propagates in the same direction as the laser oscillation Similarly, it is collected by the terahertz wave output mirror (4)...

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Abstract

The invention relates to a solid laser device and a related technology. For solving the problems that the structure of a terahertz parametric oscillator is complicated and the system is difficult to miniaturize, the technical scheme adopted by the invention provides a self-frequency-conversion terahertz parametric oscillator. The self-frequency-conversion terahertz parametric oscillator comprises a pumping source (1), a self-frequency-conversion crystal (2), a resonant cavity (3) and a terahertz wave output mirror (4), wherein pumping light emitted by the pumping source (1) is injected into the self-frequency-conversion crystal (2); activated particles in the self-frequency-conversion crystal (2) absorb the pumping light to generate population inversion; laser oscillation is generated under the feedback of the resonant cavity (3); meanwhile, the self-frequency-conversion crystal (2) has a non-linear effect and is used for carrying out frequency conversion on oscillation laser; the laser is converted into terahertz wavebands through parametric oscillation under the action of the same resonant cavity (3); the transmission direction of generated terahertz waves is the same as that of the laser oscillation; the terahertz waves are collected by the terahertz wave output mirror (4) and are reflected and outputted out of the cavity. The self-frequency-conversion terahertz parametric oscillator is mainly applied to the solid laser devices and non-linear optical frequency conversion fields.

Description

technical field [0001] The invention relates to a solid-state laser and nonlinear optical frequency conversion, in particular to a device that utilizes a crystal to generate both laser and terahertz radiation through frequency conversion. technical background [0002] Terahertz (Terahertz or THz) radiation is an electromagnetic wave with a frequency of 0.1-10THz and a typical center frequency of 1THz. Its wave band is between microwave and infrared, and it is an important electromagnetic wave band for the transition from macroelectronics to microphotonics. Terahertz waves are used in basic research fields such as physics, chemistry, astronomy, molecular spectroscopy, life science and medical science, as well as medical imaging, security inspection, environmental monitoring, material analysis, food testing, radio astronomy, mobile communication, satellite communication and military radar and other applied research fields have great scientific research value and broad applicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35H01S1/02
CPCG02F1/3501H01S1/02
Inventor 钟凯徐德刚姚建铨王与烨王茂榕梅嘉林郭拾贝
Owner TIANJIN UNIV
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