Application of high-speed IR converter in scientific and technological research

Sascha Matern; Valery M. Marchenko; Yuri Astrov; Leonid Portsel; Hans-Georg Purwins

doi:10.1117/12.463429

24 April 2002 Application of high-speed IR converter in scientific and technological research

Sascha Matern, Valery M. Marchenko, Yuri Astrov, Leonid Portsel, Hans-Georg Purwins

Proceedings Volume 4669, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications III; (2002) https://doi.org/10.1117/12.463429
Event: Electronic Imaging, 2002, San Jose, California, United States

Abstract

The infrared (IR) image converter is based on a planar semiconductor-gas discharge structure operating at a temperature of about 100 K in the spectral range of 1.1 to 3.5 micrometers . Semiconductor material and gas are Si:Zn and Ar respectively. The conversion of input IR images into the visible is characterized by a time constant in the order of a few microseconds, the dynamic range is at least 10⁴ and good linearity is observed. Together with the Hamamatsu framing camera C4187 the IR converter has been applied to investigate in the microsecond range the spatio-temporal dynamics of radiation of 1.318 micrometers Nd:YAG laser. The second application was the study of the mode evolution of an Er:YSGG laser operating at a wavelength of 2.79 micrometers and an Er:YAG laser with a wavelength of 2.94 micrometers using a pulse length of 100 to 150 microsecond(s) , and a pulse energy of about 40 mJ. In this case, the IR converter is combined with an intensified CCD camera, of which the exposure time is down to 10 microsecond(s) . In the third application, the IR converter is used in combination with a fast CMOS camera to monitor Nd:YAG laser welding of stainless steel samples at the rate of 320 frames/s.

Citation Download Citation

Sascha Matern, Valery M. Marchenko, Yuri Astrov, Leonid Portsel, and Hans-Georg Purwins "Application of high-speed IR converter in scientific and technological research", Proc. SPIE 4669, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications III, (24 April 2002); https://doi.org/10.1117/12.463429

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