Dual-wavelength tunable inner cavity tera-hertz parametric oscillator and using method thereof

A parametric oscillator, dual-wavelength technology, applied in the field of lasers, can solve the problems of increased pump power, narrow tuning range, low THz wave power, etc., and achieve the effects of low threshold output, high conversion efficiency, and small size

Inactive Publication Date: 2009-12-02
TIANJIN UNIV
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Problems solved by technology

However, the end-pump structure limits the increase of pump power, and the output THz wave power is low, and can only achieve single-wavelength tuning output, and the tuning range is narrow

Method used

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  • Dual-wavelength tunable inner cavity tera-hertz parametric oscillator and using method thereof
  • Dual-wavelength tunable inner cavity tera-hertz parametric oscillator and using method thereof
  • Dual-wavelength tunable inner cavity tera-hertz parametric oscillator and using method thereof

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Embodiment Construction

[0023] The object of the present invention is to provide a dual-wavelength tunable terahertz intracavity optical parametric oscillator and method, which can make the output frequencies of terahertz lasers respectively 0.26-4.07THz and 0.51-8.15THz continuously tunable dual-wavelength THz wave, and can operate stably at room temperature.

[0024] The present invention is realized through the following technical scheme, a dual-wavelength tunable inner cavity pumped terahertz parametric oscillator. Its technical feature is that the THz parametric oscillator includes a quasi-continuous semiconductor laser array with 4 side-pumped Nd:YAG5 lasers, configured with KD * Back pressure electro-optic Q switch composed of P crystal 2 and polarizer 3, MgO:LiNbO 3 The TPO resonant cavity composed of the crystal 7 and cavity mirrors 6 and 9 is placed in the pumping optical cavity, which is non-collinear with the pumping optical cavity, and the arrayed silicon (Si) prism 8 couples and output...

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Abstract

The invention relates to a laser and provides a dual-wavelength tunable inner cavity tera-hertz parametric oscillator and a using method thereof to realize the output of continuous tunable dual-wavelength high-power THz wave and the stable operation at room temperature. The invention adopts a technical proposal that: a pumplight resonant cavity consists of a planar holophote, a laser and an output mirror; the laser is a quasi-continuous semiconductor laser array side-pumped neodymium yttrium aluminum garnet Nd:YAG5 laser; a back pressure type electro-optical switch Q consisting of monopotassium phosphate KD P crystal and a polaroid is arranged between the planar holophote,and the laser; a TPO resonant cavity consisting of a magnesium-doped lithium niobate MgO:LiNbO3 crystal and two cavascopes is arranged between the laser and the output mirror; and the optical axis of the TPO resonant cavity and the optical axis of the pumplight resonant cavity are non-colinear; and the side of the magnesium-doped lithium niobate MgO:LiNbO3 crystal and an array silicon prism are coupled to output the tera-hertz wave. The dual-wavelength tunable inner cavity tera-hertz parametric oscillator and the using method are mainly used for manufacturing the laser.

Description

technical field [0001] The present invention relates to a laser, in particular to a dual-wavelength terahertz tuned output realized by using a terahertz parametric oscillator, that is, a dual-wavelength tunable inner-cavity terahertz parametric oscillator and a method for using the same. Background technique [0002] Terahertz (Terahertz, referred to as THz, 1THz = 10 12 Hz) radiation source is the key core technology for the development of science and technology in the THz field. It refers to the frequency range from 100 GHz to 10 THz, the corresponding wavelength is from 3 mm to 30 microns, and the electromagnetic spectrum range is quite wide between millimeter wave and infrared light. . Due to its special position in the electromagnetic spectrum, it has a series of special properties. In particular, wide-tuned THz coherent radiation sources have a wide range of application values ​​in the fields of national and national defense security such as material science, solid p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35H01S3/16H01S3/0941
Inventor 徐德刚王与烨姚建铨钟凯王鹏
Owner TIANJIN UNIV
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