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Resonant Size Enhancement of Degenerate Four-Wave Mixing Signal of Weakly Confined Excitons

โœ Scribed by H. Ishihara; T. Amakata; K. Cho

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
112 KB
Volume
221
Category
Article
ISSN
0370-1972

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โœฆ Synopsis

The peculiar size enhancement of the degenerate four-wave mixing (DFWM) signal of weakly confined excitons is elucidated by the use of the microscopic nonlocal theory of the nonlinear response. It is clarified that the high coherence of excitons plays an important role to enhance the internal field, which is a source of the large nonlinear signal. This result suggests that the enhancement of the DFWM signal reflecting the level structure of the quantized center-of-mass motion of excitons can be observed in high quality semiconductor thin films with very small non-radiative damping constants.

๐Ÿ“œ SIMILAR VOLUMES

Resonant degenerate four wave mixing det
Resonant degenerate four wave mixing detection of HCO
โœ Gerard Hall; Arthur G. Suits; Benjamine J. Whitaker ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 577 KB

The HCO radical has been detected by degenerate four wave mixing (D4WM) spectroscopy following 308 nm photolysis of CH,CHO. Spectra have been obtained for the (0, I 1,O) 6 (0, 0,O) and (0, 10,O) + (0, 0,O) vibronic transitions ofthe A%"&% \*A band system, and the effects of Renner-Teller rovibronic