DETERMINATION OF THE COMPLEX REFRACTIVE-INDEX OF INDIVIDUAL QUANTUM-WELLS FROM DISTRIBUTED REFLECTANCE

Authors
HICKERNELL RK CHRISTENSEN DH PELLEGRINO JG WANG J LEBURTON JP
Citation
Rk. Hickernell et al., DETERMINATION OF THE COMPLEX REFRACTIVE-INDEX OF INDIVIDUAL QUANTUM-WELLS FROM DISTRIBUTED REFLECTANCE, Journal of applied physics, 75(6), 1994, pp. 3056-3059
Citations number
13
Categorie Soggetti
Physics, Applied
Journal title
Journal of applied physics → ACNP
ISSN journal
00218979
Volume
75
Issue
6
Year of publication
1994
Pages
3056 - 3059
Database
ISI
SICI code
0021-8979(1994)75:6<3056:DOTCRO>2.0.ZU;2-W
Abstract
We investigate the measurement of the complex refractive index of indi vidual quantum wells by reflectance spectroscopy. Placing the wells at half-wavelength spacing to cause resonant feedback produces an order- of-magnitude increase in measurement sensitivity over that of nonreson ant structures. Quantum well dispersive and absorptive effects on refl ectance can be differentiated in certain spectral regions. Experimenta l data confirm a theoretical model of refractive index and absorption for quantum wells of GaAs in Al0.2Ga0.8As in the region of the well ba nd gap.