Novel electrode electro-optical Q switch

Abstract

The invention relates to the field of laser, in particular to a novel electrode electro-optical Q switch. According to the novel electrode electro-optical Q switch, a flaky electro-optical crystal isadopted; transparent electrodes are mounted in front of the two light-transmitting surfaces of the crystal by utilizing the longitudinal electro-optical effect of the crystal; and the deflection of alight beam polarization direction is realized by pressurizing the transparent electrodes. Due to the fact that the electrodes are directly mounted at the two ends of the light-transmitting surface ofthe crystal, the electric field uniformity is good, and the working voltage of the longitudinal electro-optical effect is independent of the crystal size, so that the shorter crystal with the larger caliber can be selected on the premise of ensuring no breakdown, and the cost is reduced. The electro-optical switch is simple in structure, large in light-transmitting caliber and capable of flexiblymeeting the use requirements. In addition, all the optical elements in the electro-optical Q switch can be glued into a whole through optical contact or optic bonding.

Description

technical field [0001] This patent relates to invention patents in the field of lasers, in particular to a new type of electrode electro-optical Q switch. Background technique [0002] Laser Q-switching technology, also called Q-switching technology, is a technology for obtaining high peak power and narrow pulse width laser pulses. [0003] The Q value is a quality factor used to describe the quality of the resonant circuit. If the Q value is low, the cavity loss is large, the device threshold is high, and it is not easy to form laser oscillation; the Q value is high, the cavity loss is small, the device threshold is low, and it is easy to form a laser. oscillation. The basic principle of Q-switching is to control the Q value of the resonant cavity by some method (that is, to control the loss of the resonant cavity). That is to try to increase the oscillation threshold of the device in the early stage of optical pumping, thereby suppressing the generation of laser oscillat...

AI Technical Summary

Problems solved by technology

However, most of the electrodes used in today's DKDP switches are ring-shaped electrodes on the side of the crystal. In order to consider the uniformity of the electric field, the length of the crystal must be appropriately lengthened when the aperture increases, resulting in an increase in the overall device cost.

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