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Transverse Spatial Resolution of Thermo–Optical Hysteresis in CdS
Author(s) -
Nguyen H. X.,
Egorov V. D.,
Harendt A.,
Nazvanova E. V.
Publication year - 1988
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221480139
Subject(s) - materials science , hysteresis , optics , beam (structure) , brightness , laser , heat equation , transverse plane , plateau (mathematics) , optoelectronics , condensed matter physics , physics , mathematical analysis , mathematics , structural engineering , engineering , quantum mechanics
Transmission beam‐profile variation thermally induced in CdS crystals is investigated at room temperature using a cw‐Ar + ‐laser and an electro‐optical modulator to produce pulses in the ms range. The formation and development of a plateau (or a ring) of the brightness in the transmitted beam are observed which strongly depends on the actual temperature of the sample. Calculations for a thin sample based on the two‐dimensional heat transport equation yield a good agreement with the experimental results.