Observation device for weak luminous phenomenon

Abstract

Abstract PURPOSE:To enable the picture signal of a streak image with a large S/N ratio to be obtained even if an object to be observed shows a weak luminous phenomenon, by superposing the streak image obtained by using a microchannel plate onto the fluorescent screen and by photoelectrically converting, namely, image- picking up the brightness on the obtained fluorescent screen. CONSTITUTION:A sweep voltage applied to a deflecting electrode 33 is synchronous with the output of a dye-laser oscillator 1, while said output is an exciting signal source which develops a fluorescent luminuos phenomenon. Consequently, the streak image of the fluorescent luminous phenomenon is repeatedly superposed and indicated on a certain part of a fluorescent screen 34. The coordinates of brightness and time are overlapped on the fluorescent screen 34 and indicated. For instance, when fluorescence excited with a dye-laser of repeated frequency of 100MHz is superposed for one second, the number of the superposed streak images becomes 10<8> and measurement of super weak light phenomenon such as producing one photon by 10<3>-10<4> times of excitation becomes possible. The streak image whose brightness is thus superposed and increased is picked up by a television camera 10.

Inventors

• 👤 Yutaka Tsuchiya
• 👤 裕 土屋

Bibliographic Details