Measuring of micrometer diameters of focused laser radiation by bolometer from thin-wire

Author

Kuzmichov, V.M. ; Safronov, B.V. ; Pogorelov, S.V. ; Balkashin, V.P.

Author_Institution

Quantum Radiophys. Sect., V.N. Karazin Kharkov Nat. Univ., Ukraine

fYear

2002

fDate

2002

Firstpage

252

Lastpage

255

Abstract

The aim of this paper consists in experimental confirmation of the possibility of micrometer diameter measurement of focused laser radiation by thin-wire bolometers. The bolometer material was platinum, which does not yield to corrosion in a wide temperature interval, has a melting point of 1769 °C and displays a smooth temperature dependence of the basic physical parameters (temperature coefficient of resistance, factor of absorption efficiency, specific heat, thermal conductivity and coefficient of heat exchange with environment), which determine the transformation coefficient of the bolometer. The thin-wire platinum bolometer had a diameter of 3 microns and a length 8.4 mm.

Keywords

bolometers; diameter measurement; laser beams; laser variables measurement; optical focusing; 3 micron; 8.4 mm; Pt; focused laser radiation; micrometer diameter measurement; optical beam diameter; smooth temperature dependence; thin-wire bolometers; transformation coefficient; Bolometers; Conducting materials; Electrical resistance measurement; Laser theory; Optical materials; Platinum; Resistance heating; Temperature dependence; Thermal conductivity; Thermal resistance;

fLanguage

English

Publisher

ieee

Conference_Titel

4thLaser and Fiber-Optical Networks Modeling, 2002. Proceedings of LFNM 2002. International Workshop on

Print_ISBN

0-7803-7372-3

Type

conf

DOI

10.1109/LFNM.2002.1014188

Filename

1014188