Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Topical Meeting on Optical Bistability (OB)

Cascaded Bistable Optical Devices Based on Two Photon Absorption in Room Temperature InSb

Wei Ji, Ajoy Kumar Kar, Ursula Keller, Jinesh Mathew, Andrew Walker

Published Jan 1, 1985• 0 citations
Publisher

Abstract

InSb at room temperature exhibits significant dispersive nonlinearity at 10 μm as a result of generation of free carriers by a two-photon absorption process(1). This has enabled us to study optical bistability in InSb at room temperature using pulsed CO2 laser radiation(2).
DOI
10.1364/obi.1985.mc2

Related papers

Optical bistability in InSb at room temperature with two-photon excitation

Ajoy Kumar Kar, Jinesh Mathew, Stanley Desmond Smith +2 more

We report the observation of optical bistability in an InSb resonator at room temperature. This effect and fringe shifts were caused by nonlinear refraction induced by two-photon absorption of radiation from a single longitudinal mode injection-locked pulsed CO2 laser operating at 9.6–10.6 μm. Intensities as low as 100 kW/cm2 were found to be sufficient to tune the 250-μm-thick cavity through a fringe maximum. From our results we deduce a value of χ(3) of the order of 10−4 esu over the range of intensities investigated.

Applied Physics Letters•Feb 15, 1983•55 citations

Optical bistability in InSb at room temperature with two-photon excitation

Ajoy Kumar Kar, Jinesh Mathew, Stanley Desmond Smith

We report the observation of optical bistability in an InSb resonator at room temperature.This effect and fringe shifts were caused by nonlinear refraction induced by two-photon absorption of radiation from a single longitudinal mode injection-locked pulsed CO 2 laser operating at 9.6-10.6flm.Intensities as low as 100 kW /cm 2 were found to be sufficient to tune the 250-flm-thick cavity through a fringe maximum.From our results we deduce a value of X (3) of the order of 10-4 esu over the range of intensities investigated.

Conference on Lasers and Electro-Optics•Jan 1, 1983•1 citation

Quasi-CW optical bistability in InSb at room temperature

Wei Ji, Ajoy Kumar Kar, Jinesh Mathew +1 more

We report the first observation of quasi-steady-state optical bistability in an InSb etalon at room temperature as a result of the generation of free carriers through two photon absorption of 10 μm radiation. Nonlinear tuning of the etalon through two free spectral ranges has been achieved, with bistability observed around the two cavity resonances. Switching from a low to high transmission state has been achieved in times less than 10 ns while switching in the opposite direction occurs within 50-100 ns. The experimental results have been successfully fitted to a numerical model of the device.

IEEE Journal of Quantum Electronics•Feb 1, 1986•21 citations

Cascaded Bistable Optical Devices Based on Two-Photon Absorption in Room Temperature InSb

Wei Ji, Ajoy Kumar Kar, Ursula Keller +2 more

Springer proceedings in physics•Jan 1, 1986•2 citations

Dynamic behavior and response-time control of two-photon optical bistability in InSb at 10.6 µm wavelength

Wei Ji, Ajoy Kumar Kar, Peter L. Chua +1 more

A time-dependent theory has been developed to model the behavior of doped-InSb, optically bistable etalons operating at room temperature and illuminated by a pulsed CO2laser. Good agreement can be obtained between this semi-empirical theory and experiment. The reduction of switching times to ∼ 1 ns by n-type doping has been demonstrated experimentally.

IEEE Journal of Quantum Electronics•Nov 1, 1987•1 citation

Room Temperature Optical Bistability in Semiconductors and Realization of Optical AND Gates

Stuart D. Smith

Recent measurements of parameters concerning dynamic third order nonlinearity for both 77K and 300K near the band gap of InSb are reviewed. New measurements and theory of carrier lifetimes are now available.

Topical Meeting on Optical Bistability (OB)•Jan 1, 1983•0 citations
We report the observation of optical bistability in an InSb resonator at room temperature. This effect and fringe shifts were caused by nonlinear refraction induced by two-photon absorption of radiation from a single longitudinal mode injection-locked pulsed CO2 laser operating at 9.6–10.6 μm. Intensities as low as 100 kW/cm2 were found to be sufficient to tune the 250-μm-thick cavity through a fringe maximum. From our results we deduce a value of χ(3) of the order of 10−4 esu over the range of intensities investigated.
We report the observation of optical bistability in an InSb resonator at room temperature.This effect and fringe shifts were caused by nonlinear refraction induced by two-photon absorption of radiation from a single longitudinal mode injection-locked pulsed CO 2 laser operating at 9.6-10.6flm.Intensities as low as 100 kW /cm 2 were found to be sufficient to tune the 250-flm-thick cavity through a fringe maximum.From our results we deduce a value of X (3) of the order of 10-4 esu over the range of intensities investigated.
We report the first observation of quasi-steady-state optical bistability in an InSb etalon at room temperature as a result of the generation of free carriers through two photon absorption of 10 μm radiation. Nonlinear tuning of the etalon through two free spectral ranges has been achieved, with bistability observed around the two cavity resonances. Switching from a low to high transmission state has been achieved in times less than 10 ns while switching in the opposite direction occurs within 50-100 ns. The experimental results have been successfully fitted to a numerical model of the device.