Pumping structure for improving pumping efficiency of pumping rodlike solid laser on lateral surface of semiconductor
A solid-state laser, side-pumping technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of high pump energy loss, low pump efficiency, complex pump cavity structure, etc. The effect of simplifying the structure, eliminating the reflective cavity structure, and improving the pumping efficiency
Inactive Publication Date: 2012-03-07
BEIJING UNIV OF TECH
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[0004] Aiming at the problems of complex structure of the pump cavity commonly used in the current semiconductor side-pumped rod-shaped solid-state laser, high pump energy loss, and low pumping efficiency, the present invention proposes a pump that improves the pumping efficiency of the semiconductor side-pumped rod-shaped solid-state laser. Pu structure
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[0020] The present invention will be described in detail below in conjunction with schematic diagrams and specific examples, but it is not intended to limit the present invention.
[0021] This embodiment is mainly a new type of guide tube for five-way side pumping, and the outer surface of the guide tube is divided into five grooves according to angles.
[0022] see first figure 2 , the guide tube 5 and the laser crystal rod 4 are coaxially placed in the figure. Pumping light sources 1 are uniformly distributed outside the draft tube 5 . The guide tube is made of glass. refer to image 3 , image 3 It is a schematic side view of the draft tube, and five grooves are evenly divided on the outer surface of the draft tube according to the angle.
[0023] see again Figure 4 , Figure 4 Schematic diagram of the cross-section of the new duct. In the figure, 5 is the draft tube itself, and 6 is 5 grooves evenly distributed on the outer surface of the draft tube according to...
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The invention relates to a pumping structure for a pumping rodlike solid laser on the lateral surface of a semiconductor. In the pumping structure, a novel honeycomb duct is used. The invention belongs to the technical field of sold laser. The honeycomb duct is made of a light transmitting material. Grooves structures 1 are uniformly distributed on the outer surface of the honeycomb duct in a mode of uniformly dividing according to the angle. Pumping light 2 is directly irradiated to a laser crystal rod 5 through groove structures 3. Due to the adoption of the specific structures of the grooves 3, the pumping light 2 is sufficiently ensured to be uniformly distributed on the surface of the laser crystal rod 5, so that the pumping efficiency is improved, a reflection cavity commonly used in the existing pumping structure is saved, the structure of the laser is simplified and the reliability of the laser is promoted.
Description
technical field [0001] The invention relates to a pumping structure of a semiconductor side-pumped solid-state laser, belonging to the technical field of solid-state lasers. Background technique [0002] Semiconductor-pumped solid-state lasers are widely used due to their compact structure, high reliability, and high efficiency. The pumping methods are mainly divided into side pumping and end pumping. Compared with end-pumping, side-pumping has a relatively simple structure and is easy to achieve high power output. Therefore, high-power semiconductor pump lasers are mostly side-pumped. [0003] Existing high-power semiconductor arrays used as pumping sources usually have a fast axis divergence angle of 35°-45° and a slow axis divergence angle of 10°-15°. For high-power semiconductor side-pumped rod-shaped solid-state lasers, in order to reduce loss, the fast axis is usually perpendicular to the working substance axis, and the slow axis is parallel to the working substance a...
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IPC IPC(8): H01S3/0941
Inventor 李强姜笑尘孙哲雷訇惠勇凌
Owner BEIJING UNIV OF TECH