4 results about "Q-switching" patented technology

The invention discloses a pulse control electro-optical Q driving power supply capable of improving Q switching frequency, which comprises a pulse control module used for generating and outputting a first pulse signal and a second pulse signal which are interlocked; the isolation optocoupler driving module is used for outputting the first pulse signal and the second pulse signal in an isolated manner and performing push-pull amplification on the first pulse signal and the second pulse signal; the isolation power supply is connected with the power supply end of the isolation optocoupler driving module and is used for supplying power to the isolation optocoupler driving module; the high-voltage DC power supply is used for providing DC high voltage; the first MOS power module is connected between the high-voltage direct-current power supply and a high-voltage output end and is used for loading high voltage to the electro-optical Q converter under the control of the first pulse signal after push-pull amplification; and the second MOS power module is connected between the high-voltage output end and the ground of the high-voltage direct-current power supply and is used for removing high voltage for the electro-optical Q converter under the control of the second pulse signal after push-pull amplification.

The pulse timing adjustable laser generating device of the present application comprises a timing controller, a driving power supply, a pump source, a beam collimation and shaping lens group, a beam combiner, a coupling lens group, a laser cavity mirror, a laser medium, a Q switch and a laser output coupling mirror. The multiple output ports of the timing controller are connected with the input ports of the multiple driving power supplies for generating multiple trigger signals and sending each trigger signal to the corresponding driving power supply, and each driving power supply is connected with a pump source. The present application has the advantages of compact structure, easy integration and timing programmable control pulse train working mode. Through increasing the time and sequence adjustment function of the electric modulation signal, multiple different wavelength pump sources or multiple same wavelength pump sources are pulsed pumped in time, multiple laser pulse sequences are generated in the laser cavity using the Q switching device, the problem that the pulse train laser timing is difficult to accurately control is broken through, and the application field of the pulse train laser is effectively expanded.

The application discloses a kind of miniaturization laser based on diode single tube pumping and MOPA structure, belong to laser technical field.The laser includes seed source generation module, seed source amplification module and laser output and frequency doubling conversion module.Adopt diode single tube pumping to combine multiple groups of shaping cavity mirror to realize the efficient coupling of pump light and gain crystal, and high-quality seed light is generated by passive Q switching.Seed light is amplified by polarization double-pass amplification structure, and twice energy extraction is realized in amplification gain crystal, to improve energy utilization.Laser output part realizes efficient frequency doubling output by folding light path and frequency doubling crystal.The application adopts high-temperature curing process to tightly integrate each optical element and heat dissipation substrate, effectively improves the structural stability and heat dissipation efficiency, realizes the comprehensive optimization of laser in miniaturization, high energy output and environmental adaptability, and is suitable for compact application scenarios such as vehicle-mounted laser radar, unmanned aerial vehicle load, etc.

The utility model discloses a reflective acousto-optic Q switch and a Q-switched laser, and belongs to the technical field of optical devices. The reflective acousto-optic Q switch comprises a packaging metal shell; the optical fiber collimator is arranged on the first side wall of the packaging metal shell; the acousto-optic crystal is located in the packaging metal shell, and the electroacoustic transducer is arranged on the surface of the acousto-optic crystal; the space reflection unit is located in the packaging metal shell and comprises a first reflection piece, a second reflection piece and a third reflection piece, the first reflection piece is arranged in the light emitting direction of the optical fiber collimator and located on one side of the acousto-optic crystal, and the second reflection piece is arranged and located on the other side, provided with the reflection face, of the acousto-optic crystal; the third reflecting part is located on the side, close to the first side wall, of the second reflecting part and used for receiving light reflected by the second reflecting part and reflecting the light back to the second reflecting part. According to the utility model, the volume of the acousto-optic Q switch can be reduced, and miniaturization of equipment is facilitated.