Novel orthogonal-polarization dual-wavelength laser

A dual-wavelength laser, orthogonal polarization technology, used in lasers, laser parts, phonon exciters, etc.

Active Publication Date: 2011-09-21
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

However, the dual-frequency laser is essentially two split frequency modes of the same laser radiation wavelength. Limited by the gain linewidth, the frequency difference of the orthogonally polarized dual-frequency laser obtained by this method can only reach at most the gain linewidth of the solid-state laser. limit

Method used

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with accompanying drawing, among the figure:

[0022]1 is the first reflector, which is plated with a dielectric film that is completely reflective for the first wavelength and highly transparent for the second wavelength.

[0023] 2 is a light splitting device, which is anti-reflection for wavelength one and full reflection for wavelength two.

[0024] 3 is laser crystal, such as Nd:YVO 4 , Nd:YAlO 3 , Nd:GdVO 4 , Nd: YLF and other anisotropic neodymium-doped laser crystals, both ends of the laser crystal are polished and coated with anti-reflection coatings for wavelength one and wavelength two.

[0025] 4 is an output coupling mirror, which is plated with a dielectric film that partially passes through the first wavelength and the second wavelength.

[0026] 5 is a polarizing element, which transmits vertically polarized laser light

[0027] 6 is the second reflecting mirror, which is plated wi...

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Abstract

The invention discloses a novel orthogonal-polarization dual-wavelength laser which belongs to a novel laser and is a dual-wavelength continuous pulse laser or a dual-wavelength repetition-rate pulse laser realizing mutual orthogonality of a horizontal polarized wavelength 1 and a vertical polarized wavelength 2 in polarization directions by adopting an anisotropic neodymium-doped laser crystal with a multichannel transition property. The laser device comprises the anisotropic neodymium-doped laser crystal, such as Nd:YAlO3, Nd:YVO4, Nd:YLF or Nd:GdVO4 and other crystals, a pumping system and an optical resonant cavity, wherein the pumping system is used for pumping the laser crystal to enable active ions (Nd<3+> ions) in the laser crystal to form distribution for population inversion; the optical resonant cavity is used for the resonation of dual-wavelength radiation of the horizontal polarized wavelength 1 and the vertical polarized wavelength 2 of the active ions in transmission emission; and finally, orthogonal-polarization dual-wavelength laser of the horizontal polarized wavelength 1 and the vertical polarized wavelength 2 are simultaneously outputted in the same light path both by the same output coupling mirror. The orthogonal-polarization dual-wavelength laser provides a novel laser source and a novel technical approach to acquisition of high-power, high-coherence or difference-frequency (THz radiation waves) laser, can broaden the application of dual-wavelength laser, and has a broad application prospect and use values in the fields of non-linearity frequency conversion, fiber-optic communication and the like.

Description

technical field [0001] The invention relates to a novel solid-state dual-wavelength laser capable of outputting dual-wavelength lasers with two polarization states orthogonal to each other, belonging to the field of optoelectronic devices. Background technique [0002] Solid-state dual-wavelength lasers can be widely used in nonlinear frequency conversion, laser radar, satellite ranging, environmental monitoring, photodynamic medical treatment, and spectroscopy research, especially in nonlinear frequency conversion. In recent years, solid-state dual-wavelength lasers have been used Performing sum frequency or difference frequency has become an important technical way to obtain new wavelength lasers with special purposes, such as using 1 micron and 1.3 micron dual-wavelength lasers to produce yellow light and orange light through the sum frequency; Frequency technology can also obtain coherent THz radiation waves. Therefore, the research of solid-state dual-wavelength laser ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16H01S3/082
Inventor 魏勇张戈黄呈辉朱海永黄凌雄
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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