Quasi-Resonant Optical Nonlinearities And Exciton Dephasing In CdS

Mario Dagenais

doi:10.1117/12.962149

4 January 1990 Quasi-Resonant Optical Nonlinearities And Exciton Dephasing In CdS

Mario Dagenais

Proceedings Volume 1148, Nonlinear Optical Properties of Materials; (1990) https://doi.org/10.1117/12.962149
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

Detailed measurements of the free exciton dephasing time were performed in high quality CdS platelets at different detunings. A large asymmetry in the detuning dependance of the exciton damping is measured and is explained in terms of the intrinsic properties of exciton-polaritons. Below the transverse A exciton frequency, and at temperatures between 2 and 80 K, the damping is extrinsic in nature and is due to impurities. Above the transverse A exciton frequency, and for temperatures below 80 K, the damping is due to acoustical phonons. Above 80 K, LO-phonon scattering sets in. Nonlinear optical transmission measurements at low intensity (~5kW/cm²) below the A exciton resonance demonstrate the importance of self-broadening of exciton-polaritons.

Citation Download Citation

Mario Dagenais "Quasi-Resonant Optical Nonlinearities And Exciton Dephasing In CdS", Proc. SPIE 1148, Nonlinear Optical Properties of Materials, (4 January 1990); https://doi.org/10.1117/12.962149

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available