Voltage and response-time measurements by thin-single-film laser pulse detectors

Previously, voltage and response-time measurements have been made in refractory materials. We have tried to observe such effects in some low-melting-point materials. For this purpose Sb-, Bi- and Te-film detectors were developed and studied using pulsed Nd-glass and CO₂ lasers. Te films show the highest responsivity and Sb detectors give the fastest response time (12.5 ns). We have also measured voltages in obliquely-deposited Te films, with varying angles of deposition from 0° to 60°. An Ar⁺ laser was also used to irradiate the Te films.