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Terahertz wave parameter oscillator with annular cavity

A terahertz and wave parameter technology, applied in the field of terahertz waves, can solve the problems of low power and low efficiency of terahertz waves, and achieve the effects of flexible operation, simple tuning method, and improved optical conversion efficiency.

Inactive Publication Date: 2016-12-21
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Abstract
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  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a ring-cavity terahertz wave parametric oscillator to solve the problems of low power and low efficiency of the existing terahertz wave

Method used

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  • Terahertz wave parameter oscillator with annular cavity
  • Terahertz wave parameter oscillator with annular cavity

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] as attached figure 1 As shown, a ring cavity terahertz wave parametric oscillator includes a pump source 1, a first mirror 3, a second mirror 5, a third mirror 6, a fourth mirror 7, a first MgO:LiNbO3 Crystal 8, the second MgO:LiNbO 3 Crystal 9, the third MgO:LiNbO 3 Crystal 10, the fourth MgO:LiNbO 3 Crystal 13, fifth MgO:LiNbO 3 Crystal 14 and sixth MgO:LiNbO 3 Crystal 15;

[0031] The pump light 2 emitted by the pump source 1 is reflected by the first mirror 3 and then incident on the first MgO:LiNbO 3 Crystal 8, the third MgO:LiNbO 3 Crystal 10 and the second MgO:LiNbO 3 The crystal 9 produces Stokes light 4, the first terahertz wave 11 and the second terahertz wave 12 through the optical parametric effect; 3 Crystal 10, sixth MgO:LiNbO 3 The ring cavity formed by the total reflection surface of the crystal 15 oscillates, and the first ter...

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Abstract

The invention discloses a terahertz wave parameter oscillator with an annular cavity. The oscillator comprises a pumping source, a first reflecting mirror, a second reflecting mirror, a third reflecting mirror, a fourth reflecting mirror, a first MgO : LiNbO<3>crystal, a second MgO : LiNbO<3>crystal, a third MgO : LiNbO<3>crystal, a fourth MgO : LiNbO<3>crystal, a fifth MgO : LiNbO<3>crystal and a sixth MgO : LiNbO<3>crystal. Two of four beams of terahertz waves generated through an optical parameter effect are used as seed light, so the optical parameter effect can be improved and other two beams of the terahertz waves can be effectively amplified. Stokes light is subjected to resonance and amplification in the annular cavity and reusable, so optical transmission efficiency is effectively increased. The terahertz waves are emitted out by being perpendicular to the MgO : LiNbO<3>crystal without any coupling output device, so output loss of the terahertz waves is effectively reduced. By changing an included angle between pumping light and the Stokes light, the terahertz waves with tuned frequency can be obtained, tuning mode is simple and operation is flexible.

Description

technical field [0001] The invention belongs to the technical field of terahertz waves, and in particular relates to a ring cavity terahertz wave parametric oscillator. Background technique [0002] Terahertz wave (THz), refers to the frequency of 0.1-10THz (1THz=10 12 Hz) range, located between microwave and infrared radiation, coincides with millimeter waves at long wavelengths, and coincides with infrared waves at short wavelengths. It is the transition area between electronics and photonics, and macroscopic theory to microscopic theory. Terahertz waves between the microwave and infrared bands have many special properties: [0003] (1) A large number of organic molecules, semiconductor sub-bands and micro-bands, rotational and vibrational transition energies are all in the terahertz wave range. The spectral resolution characteristics of terahertz waves make terahertz wave detection technology, especially terahertz wave spectral imaging technology, In addition to disting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 李忠洋王思磊王孟涛
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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