Laser for achieving output at low beam divergence angle based on ultra-long cavity
A laser and beam divergence technology, which is applied in the field of lasers, can solve the problems of reducing the laser beam divergence and the adjustment of the length of the resonator is not large, and achieve the effects of good beam quality, small space occupation and high laser efficiency
Inactive Publication Date: 2019-01-01
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology
However, due to the thermal effect of the crystal, the adjustment of the length of the resonator is not large, so the beam spread angle of the laser output is rarely reduced by increasing the length of the resonator
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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0027] figure 1 It is a structural schematic diagram of a laser based on an ultra-long cavity to achieve low beam divergence output according to an embodiment of the present invention, figure 2 is a schematic structural view of a single-end pumped slab crystal according to an embodiment of the present invention, such as figure 1 and figure 2 As shown, the laser includes a total reflection mirror 1, a first reflection mirror 3, a first reflection plate 4, a second reflection plate 5, a slab crystal 6, a crystal heat sink 7, a pumping module 8, and a second reflection mirror 9 and output mirror 10, where:
[0028] The total reflection mirror 1, the first reflection mirror 3, the second reflection mirror 9 and the outpu...
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The invention discloses a laser for achieving the output at a low beam divergence angle based on an ultra-long cavity. The laser includes a totally reflecting mirror, a first reflector, a first reflecting plate, a second reflecting plate, a slab crystal, a crystal heat sink, a pumping module, a second reflector, and an output mirror, wherein the totally reflecting mirror, the first reflector, thesecond reflector and the output mirror are sequentially arranged in an optical and coaxial manner. The first reflecting plate, the slat crystal and the second reflecting plate are sequentially arranged and located at one side of the optical axis, so that the light reflected by the first reflector arrives between the first reflecting plate and the second reflecting plate. The first reflector, the first reflecting plate, the second reflecting plate and the second reflector constitute a laser divergence angle control function module. According to the technical scheme of the invention, the laser eliminates the thermal lens effect of the crystal, and effectively increases the length of a resonant cavity in a limited space, obtains low beam divergence angle laser output, and has the advantages of small occupied space, good beam quality, and high laser efficiency.
Description
technical field [0001] The invention relates to the technical field of lasers, in particular to a laser that realizes low beam divergence output based on an ultra-long cavity. Background technique [0002] The laser output beam divergence angle is an important indicator of laser output performance. In order to meet many application requirements, it is necessary to compress the laser output beam divergence angle to meet the requirements of long-distance transmission. In the process of compressing the divergence angle of the beam in the traditional optical divergence angle compression system, the size of the laser output spot will be multiplied, making the subsequent optical system equipment bulky, bulky, and difficult to miniaturize. A laser with low beam divergence can reduce or replace the subsequent optical pressure angle system, and can effectively reduce the volume and weight of the subsequent optical system, which is a direction of current laser research. [0003] At p...
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IPC IPC(8): H01S3/105H01S3/0941H01S3/042
CPCH01S3/105H01S3/0405H01S3/042H01S3/0941
Inventor 王超于永吉赵璐陈薪羽吴春婷董渊李述涛王子健金玉石金光勇
Owner CHANGCHUN UNIV OF SCI & TECH