Three-dimensional optical parameter oscillation terahertz wave radiation source
A parametric oscillation, three-dimensional optical technology, applied in the field of terahertz wave applications, can solve problems such as low efficiency and low terahertz wave power
Inactive Publication Date: 2019-07-16
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology
[0009] The purpose of the present invention is to provide a three-dimensional optical parametric oscillation terahertz wave radiation source to solve the problems of low power and low efficiency of the existing terahertz wave
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[0037] Such as Figure 1-2 As shown, a three-dimensional optical parametric oscillation terahertz wave radiation source, including pump source 1, MgO:LiNbO 3 Crystal 2, pump light recycler 4, and set in MgO:LiNbO 3 Mirrors around crystal 2;
[0038] The pump light emitted from the pump source 1 passes through the first mirror L m1 After reflection, it becomes the first pump light L p1 Back incident MgO:LiNbO 3 Crystal 2, which generates the first Stokes light L through the optical parametric effect s1and terahertz wave 3, the first pump light L p1 In MgO:LiNbO 3 After total reflection in crystal 2, it becomes the tenth pump light R p1 , the tenth pump light R p1 In MgO:LiNbO 3 The tenth Stokes light R is generated in the crystal 2 through the optical parametric effect s1 . produced the first Stokes light L s1 and Tenth Stokes Light R s1 by the nineteenth mirror L M1 and the twenty-eighth mirror R M1 The resonant amplification in the composed resonant cavity prod...
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Abstract
The invention discloses a three-dimensional optical parameter oscillation terahertz wave radiation source. The three-dimensional optical parameter oscillation terahertz wave radiation source comprisesa pumping source, a MgO:LiNbO3 crystal, a pumping light recover and a reflecting mirror, wherein the reflecting mirror is arranged around the MgO:LiNbO3 crystal, a plane where first pumping light andtenth pumping light are propagated is a plane determined by an X axis and a Y axis, a Z axis is perpendicular to the plane where the first pumping light and the tenth pumping light are propagated, apropagation direction of the pumping light emitted from the pumping source is an X-axis negative direction, and a propagation direction of a terahertz wave is a Y-axis positive direction. The three-dimensional optical parameter oscillation terahertz wave radiation source provided by the invention has the following advantages that the pumping light is circularly used, multiple beams of terahertz waves can be generated, and the terahertz wave energy is effectively improved; by changing an included angle between the pumping light and Stokes light, a terahertz wave with a tuning frequency can be obtained; a tuning mode is simple and is flexible to operate; the terahertz wave is emitted perpendicular to the MgO:LiNbO3 crystal, any coupling output device is not needed, and the output loss of theterahertz wave is effectively reduced.
Description
technical field [0001] The invention belongs to the technical field of terahertz wave applications, and in particular relates to a three-dimensional optical parametric oscillation terahertz wave radiation source. Background technique [0002] Terahertz wave (Terahertz, referred to as THz), refers to the frequency of 0.1-10THz (1THz = 10 12 The electromagnetic wave in the THz range, whose waveband is between the millimeter wave and infrared in the electromagnetic spectrum, is the transition area between photonics and electronics, and macroscopic theory to microscopic theory. The special position of terahertz wave makes it widely used in basic research fields such as physics, chemistry, astronomy, molecular spectroscopy, life science and medical science, as well as medical imaging, environmental monitoring, material detection, food detection, radio astronomy, mobile communication, satellite Applied research fields such as communication and military radar have great scientific...
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Login to View More IPC IPC(8): H01S1/02G02F1/39G02F1/35
CPCG02F1/353G02F1/39G02F1/392H01S1/02
Inventor 李忠洋徐娟邴丕彬张红涛陈建明李永军孙向前谭联袁胜邓荣鑫
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER