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Nd:MgO:LN-based cross-polarization dual-wavelength optical path staggered voltage-reducing Q-switched laser and method

An orthogonal polarization and laser technology, applied in lasers, laser components, phonon exciters, etc., can solve the problem of inability to obtain narrow pulse width, adjustable repetition frequency, high peak power, orthogonal polarization dual-wavelength laser output, and impact research Progress, restrictions on the development of dual-wavelength lasers, etc.

Active Publication Date: 2021-07-06
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

However, the polarization states of the 1083nm and 1094nm lasers output by the Nd:MgO:LN dual-wavelength laser are in an orthogonal state, and the electro-optic Q-switching technology cannot be directly used to simultaneously "open" and "close" the dual wavelengths in the resonator, and thus cannot obtain Dual-wavelength laser output with narrow pulse width, adjustable repetition frequency, and high peak power orthogonal polarization ultimately limits the development of dual-wavelength lasers and affects research progress in related fields

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  • Nd:MgO:LN-based cross-polarization dual-wavelength optical path staggered voltage-reducing Q-switched laser and method

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Embodiment Construction

[0035] Hereinafter, exemplary embodiments of embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. Also, for clarity, parts not related to describing the exemplary embodiments are omitted in the drawings.

[0036] In the embodiments of the present disclosure, it should be understood that terms such as "comprising" or "having" are intended to indicate the presence of features, numbers, steps, acts, components, parts or combinations thereof disclosed in this specification, and are not intended to The possibility that one or more other features, numbers, steps, acts, parts, parts or combinations thereof exist or be added is excluded.

[0037] In addition, it should be noted that, in the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. Embodiments of the present disclosure will be des...

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Abstract

The invention discloses an Nd:MgO:LN-based cross-polarization dual-wavelength optical path staggered voltage-reducing Q-switched laser and a method. In the laser, an output mirror, a first cavity mirror, a second cavity mirror, a third cavity mirror and a fourth cavity mirror form an M-shaped laser resonant cavity; an Nd:MgO:LN crystal is arranged between the first cavity mirror and the second cavity mirror; a first convex lens is arranged between the second cavity mirror and the third cavity mirror; a polarization splitting prism, a beam combiner, a polaroid, an RTP Q switch, a lambda / 4 wave plate and a diaphragm are sequentially arranged between the third cavity mirror and the fourth cavity mirror; the first reflector is located right above the polarization splitting prism, the second reflector is located above the beam combiner, and a lambda / 2 wave plate is arranged between the first reflector and the second reflector; a second coupling mirror group and a second pumping module are sequentially arranged on the outer side of the first cavity mirror, and a first coupling mirror group, a first pumping module and a first coupling mirror group are sequentially arranged on the outer side of the second cavity mirror.

Description

technical field [0001] The invention relates to the field of solid-state lasers, in particular to a Nd:MgO:LN-based orthogonally polarized dual-wavelength optical path interleaved depressurization Q-switched laser and a method thereof. Background technique [0002] Doped with Nd 3+ The laser crystal can obtain orthogonally polarized dual-wavelength laser output. At the same time, only one piece of Nd 3+ Crystal-generated dual-wavelength lasers enable excellent spot pattern matching. Due to its simple structure and low laser threshold, this type of synchronously output dual-wavelength laser is widely used in laser precision ranging, laser medicine, spectral analysis and other fields, especially the dual-wavelength laser with a wavelength interval of less than 20nm can be used in terahertz (THz) and differential absorption lidar (DIAL). [0003] Nd:MgO:LN is an anisotropic crystal that can simultaneously generate orthogonally polarized 1084nm and 1093nm laser outputs, see ...

Claims

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Application Information

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IPC IPC(8): H01S3/10H01S3/115H01S3/00
CPCH01S3/10061H01S3/115H01S3/0071
Inventor 于永吉金光勇刘航董渊王超王宇恒
Owner CHANGCHUN UNIV OF SCI & TECH
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