Experimental study on crosstalk phenomenon of pulsed laser irradiation on array CCD

In order to study the disturbing effect of pulsed laser irradiation on array CCD camera, experiment of CCD camera disturbed by single pulse laser was carried out at short-distance. A 1064nm laser was chosen as the irradiation source, which was attenuated by attenuation pieces before entering the CCD lens. An aperture was set before CCD lens to limit spot size to radius of 2.5mm. 50% laser was split for monitoring the laser stability and the other 50% entered CCD camera. The entering laser energy was started with 2.48 nano Joule, and CCD camera was in normal work condition; along with the increase of laser pulse energy, saturated pixels came out in the image plane, and saturated zone increased at the same time. With the laser pulse energy increasing to 47.1 nano Joule, a short crosstalk line appeared above the main spot, and there was a certain distance between them. With increasing of laser pulse energy, distance between crosstalk line and main spot reduced and the crosstalk line became lighter and thicker, a shorter horizontal crosstalk in the middle of longitudinal crosstalk line became obvious at the same time. The experimental results has some differences between the gap on crosstalk line and unilateral crosstalk line, which provides some new experimental data for analysing disturbing effect of laser irradiation on array CCD.