DKDP电光Q开关（Q-switch，Pockels Cells）因其独特的物理特性和优异的光学品质而广泛应用于大口径、高功率、窄脉宽 （<10ns）激光系统。 DKDP晶体是单轴晶体，具有优异的光学质量，其消光比>2000:1（使用632nm He-Ne激光测量)，波前畸变98％。DKDP电光Q 开关电容小（约为3-5pF），因而上升时间短（<0.5ns），在调Q时可输出窄脉宽的脉冲激光。与市场上使用较广泛的电光晶体相比，DKDP晶体具有较高的损伤阈值; 在脉宽10ns、波长为1064nm、重复频率 10Hz的光学条件下，损伤阈值>1GW/cm²。 DKDP electro-optic Q-switches(Q-switch, Pockels Cells)are widely used in large-caliber,high-power,narrow-pulse(<1Ons)laser systems due to their unique physical properties and excellent optical quality. The DKDP crystal is a uniaxial crystal with excellent optical quality with an extinction ratio of >2000:1 (measured using a 632 nm He-Nelaser)with a wave front distortion of 98%.The DKDP electro-optic Q-switching capacitor is small(about 3-5pF),so the rise time is short (<0.5ns),and a narrow pulse width pulse laser can be output during Q-switching. Compared with the widely used electro-optic crystals on the market, DKDP crystals have higher damage thresholds;the damage threshold is >1GW/cm2 under optical conditions of 10 ns pulse width,1064 nm wavelength and repetition frequency 10 Hz.