Device for outputting dual wavelength laser and terahertz wave based on single periodical and polarized crystal

A periodically polarized crystal, dual-wavelength laser technology, used in laser cooling devices, masers, laser parts, etc., can solve the problems of complex optical systems and difficult adjustment of optical paths, and achieve simplified experimental equipment and easy adjustment of optical paths. , the effect of increasing the function

Active Publication Date: 2010-12-22
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

The disadvantage of this method is that two periodically polarized crystals need to be used in the device, the optical system is more complicated, and the optical path is difficult to adjust

Method used

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  • Device for outputting dual wavelength laser and terahertz wave based on single periodical and polarized crystal
  • Device for outputting dual wavelength laser and terahertz wave based on single periodical and polarized crystal
  • Device for outputting dual wavelength laser and terahertz wave based on single periodical and polarized crystal

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Embodiment

[0040] The parameters of each optical device will be described in detail below with reference to the accompanying drawings. The total reflection mirror 1 is a flat mirror, and the surface is coated with a high reflection film of 1064nm. The side-pump laser head 2 is a 100W laser diode side-pump module produced by Beijing Xinrunxin Company. The crystal rod material is Nd:YAG, and the size is , Both ends are coated with 1064nm anti-reflection coating, the whole module is cooled by a circulating water cooler, and the working temperature is 18°C. The side pump laser head 2 is placed near the right end of the total reflection mirror 1. The repetition frequency of the acousto-optic Q switch 3 is adjustable from 1 to 50 kHz, and the surface is coated with a 1064nm anti-reflection coating. The acousto-optic Q switch 3 is placed near the right end of the side-pumped laser head 2 .

[0041] The plane S1 of the plano-concave mirror 4 is coated with a 1064nm antireflection film, the co...

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Abstract

The invention discloses a device for outputting dual wavelength laser and terahertz wave based on a single periodical and polarized crystal, which comprises a full reflecting mirror (1), a side pump laser head (2), an acousto-optic Q switch (3), a flat concave mirror (4), a periodical and polarized crystal (5), a temperature control furnace (6) and a plane output mirror (7), wherein the temperature control furnace (6) is used for controlling the work temperature of the periodical and polarized crystal (5); the side pump laser head (2), the acousto-optic Q switch (3), the flat concave mirror (4), the periodical and polarized crystal (5) and the plane output mirror (7) are sequentially arranged on the same optical route; the plane S1 of the flat concave mirror (4) faces to the acousto-opticQ switch (3); and concave surface S2 of the flat concave mirror (4) faces the periodical and polarized crystal (5). With the single periodical and polarized crystal, the device can simultaneously realize the infrared laser output and the terahertz radiation in dual wavelength, is simple and compact in structure, is easy to adjust the optical route, and has high terahertz radiation converting efficiency.

Description

technical field [0001] The invention relates to the technical field of mid-infrared laser and terahertz radiation source, in particular to a device for outputting dual-wavelength laser and terahertz wave based on a single periodically polarized crystal. Background technique [0002] Terahertz (0.1-10THz) technology has great scientific value and broad application prospects in object imaging, environmental monitoring, radio astronomy, satellite communication and military radar. The optical parametric oscillator (OPO) generates dual-wavelength laser output and then uses the nonlinear difference frequency (DFG) process is an important means to obtain terahertz radiation. The advantages of this method are that there is no threshold, the experimental equipment is simple, and the difference frequency is easy to achieve. conversion etc. [0003] The invention patent application with the application number "200510014484.6" discloses a device for generating terahertz by a non-period...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S1/00H01S3/06H01S3/04H01S3/08
Inventor 熊波李晋闽林学春侯玮郭林张玲孙陆
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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