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Nonlinear Optical Behaviour of Absorbing CdS x Se 1− x Interference Filters
Author(s) -
Ferencz K.,
Szipöcs R.
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.2221500272
Subject(s) - optical bistability , interference (communication) , bistability , optics , materials science , multivibrator , refractive index , wavelength , nonlinear system , optoelectronics , laser , filter (signal processing) , optical filter , optical power , transmission (telecommunications) , power (physics) , nonlinear optics , physics , telecommunications , channel (broadcasting) , quantum mechanics , voltage , computer science , computer vision
First experimental results of nonlinear, thin film interference filter wedges with mixed CdS x Se 1− x as spacer material at the 633 nm wavelength of He–Ne laser are reported. Optical bistability is observed with less than 7.5 mW of optical power in single‐cavity structures. The change in refractive index is found to be positive which is in accordance with the thermal mechanism of nonlinearity. Producing a double‐cavity structure a device is obtained which works as an optical astable multivibrator having periodical change of transmission as the function of time.