英国政府资助的一个协作组发明了一种经济耐用的激光系统,能对输油管进行水下检测。该系统使用1.2W脉冲固态二极管抽运Nd:YVO4激光器。抽运光源为耦合光纤二极管激光器。调Q系统使用电光偏转装置。该装置引起横向电场发生线性变化,对电极加上约900V电压时引起折射率改变,导致激 A collaborative group funded by the British government invented a cost-effective laser system that conducts underwater inspection of pipelines. The system uses a 1.2W pulsed solid state diode pumped Nd: YVO4 laser. Pumping light source for coupling fiber diode laser. Q system uses electro-optical deflection device. The device causes a linear change in the transverse electric field and causes a change in the refractive index when a voltage of about 900 V is applied to the electrode,