Mixed chamber mode locking laser oscillator and laser outputting method thereof
A mode-locked laser and hybrid cavity technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of complex structure, large volume, and unguaranteed beam quality of the output system, so as to avoid damage and improve the output. The effect of power
Active Publication Date: 2017-03-22
INST OF APPLIED PHYSICS & COMPUTATIONAL MATHEMATICS
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[0003] The technical problem to be solved by the present invention is that the output system of the current mode-locked cavity-stabilized oscillator plus amplifier has complex structure and large volume, and the beam quality cannot be guaranteed during the multi-stage amplification process.
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[0036] Concave cylindrical reflector 2: R1 = 250mm, width 20mm, height 10mm, convex cylindrical reflector 4: R2 = 125mm, width 6mm, height 10mm, and the end close to the center line of laser crystal 7 should be ground with a knife edge, concave Cylindrical reflector 1 and convex cylindrical reflector 4 are placed at a distance of 60mm, laser crystal 7 is Nd:YVO4 of 14mmx1mmx10mm (corresponding to the three directions of x, y, and z respectively), and the distance to the left of laser crystal 7 from concave cylindrical reflector 1 is Placed at 35mm, the plane reflector 3 is placed at an angle of 45 degrees to the optical axis, the matching lens 6 is a convex lens with a focal length of 60mm, the semiconductor saturable absorption mirror 5 is a 3mmX3mm semiconductor saturable absorption mirror 5 with a dominant wavelength of 1064nm from BATOP Company, and the pump light source is selected 880nm wavelength laser diode.
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The invention relates to a mixed chamber mode locking laser oscillator and a laser outputting method thereof. Laser crystal is arranged between a recessed cylindrical surface reflection mirror and a protruding cylindrical surface reflection mirror. A panel reflection mirror receives light scattered by the laser crystal. A semiconductor saturation adsorption mirror receives light of the panel reflection mirror. A matching lens is arranged between the semiconductor saturation adsorption mirror and the panel reflection mirror. Pump light forms light spots, penetrates through the recessed cylindrical surface reflection mirror and is output from one side of the protruding cylindrical surface reflection mirror. The invention also comprises a laser outputting method. The method comprises steps of during chamber adjusting, shielding the semiconductor saturation adsorption mirror, wherein a second non-steady chamber is in the stable state and the laser output is output from the protruding cylindrical reflection mirror. According to the invention, a non-steady chamber structure is used in the horizontal direction where the light beam quality is output by approximating the diffraction limit; a steady chamber structure is still used in the vertical direction; mode field area in the chamber is increased; the light strength in the chamber under the power level is reduced; and on the precise that the light beam quality is kept, quite high output power is generated.
Description
technical field [0001] The invention relates to the technical field of laser oscillators, in particular to a hybrid cavity mode-locked laser oscillator and a method for outputting laser light. Background technique [0002] The existing high-power ultrashort pulse laser has a complex structure, and the beam quality gradually deteriorates with the step-by-step amplification. This is because the existing mode-locked oscillators are all small cavity-stabilized oscillators. Since the output power of this oscillator is not high , so it is necessary to add one or more amplifiers to obtain higher power pulse output. In this process, due to thermal distortion, phase difference and other reasons, the beam quality gradually deteriorates. Due to the limitation of the current technical level, the core component of the mode-locked laser SESAM Usually very expensive and small in size (the price of a 3mmx3mm SESAM is about 3000 euros), so the current model oscillators mostly use cavity-stab...
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IPC IPC(8): H01S3/098H01S3/101H01S3/106H01S3/16
CPCH01S3/101H01S3/106H01S3/1106H01S3/163
Inventor 刘勤勇刘晓萌
Owner INST OF APPLIED PHYSICS & COMPUTATIONAL MATHEMATICS
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