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Compound Configuration Tunable Grating External Cavity Dual-Mode Laser

A laser and grating technology, applied in the field of optics and lasers, can solve the problems of complex external cavity configuration and inconvenient optical path adjustment, and achieve the effects of simple wavelength tuning, convenient optical path adjustment, and fewer optical components

Active Publication Date: 2015-12-02
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The configuration of these external cavities is relatively complicated, and the adjustment of the optical path is inconvenient.

Method used

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  • Compound Configuration Tunable Grating External Cavity Dual-Mode Laser
  • Compound Configuration Tunable Grating External Cavity Dual-Mode Laser
  • Compound Configuration Tunable Grating External Cavity Dual-Mode Laser

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0023] see figure 1 The optical path diagram and figure 2 The optical path diagram of the composite configuration tunable grating external-cavity dual-mode laser with slits in the optical path shown. Such as figure 1 As shown, the present invention discloses a compound configuration tunable grating external cavity dual-mode laser, which includes a gain device 1, a lens 2, a grating 3, and a plane mirror 4, wherein the end face 12 on one side of the gain device 1 is located at the focal point of the lens 2 plane, so that the light emitted by the end surface 12 on one side of the gain device 1 is collimated into parallel light after being passed through the lens 2, and the parallel light is incident on the surface of the...

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PUM

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Abstract

The invention discloses a composite structure type tunable grating outer cavity dual-mode laser machine. The composite structure type tunable grating outer cavity dual-mode laser machine comprises a gain component, a lens, a grating and a plane mirror, wherein light emitted from the end face of one side of the gain component is collimated by the lens and then irradiated to the surface of the grating in a incident mode (the incident angle is theta), and diffraction is generated, two beams of diffraction light which are lambda 1and lambda 2 in wave length move forward along the following two paths respectively: firstly, the m level diffraction light which is lambda 1in wave length goes back to the gain component in the incident direction along the same path from which the light comes, wherein m is an integer except zero, and the diffraction angle is equal to the incident angle theta, so that a laser mode which is lambda 1in wave length is formed between the grating and the end face of the other side of the gain component, and secondly, the n level diffraction light which is lambda 2 in wave length goes back to the gain component in the incident direction along the same path from which the light comes after being reflected by the plane mirror and secondly diffracted by the grating, wherein n is an integer except zero and not equal to m, and the diffraction angle is phi, so that a laser mode which is lambda 2 in wave length is formed between the plane mirror and the end face of the other side of the gain component through the grating.

Description

technical field [0001] The invention relates to the field of optics and laser technology, in particular to a composite configuration tunable grating external cavity dual-mode laser, which can simultaneously output laser light of two wavelengths. Background technique [0002] Terahertz waves generally refer to electromagnetic waves with a frequency in the range of 0.1-10THz, whose high-frequency end overlaps with far-infrared waves, and whose low-frequency end overlaps with millimeter waves. Spectroscopy, imaging, and communication technologies based on terahertz waves have important application prospects in many aspects such as national defense, security detection, drug detection, biomedical diagnosis, astronomical observation, environmental monitoring, material quality detection, inter-satellite communication, and scientific research. Therefore, terahertz science and technology have attracted much attention, which involves all aspects of terahertz wave generation, transmiss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/14H01S5/065
Inventor 金鹏魏恒吴艳华陈红梅王占国
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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