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(a) The refractive index profile (blue) for the low-finesse, resonant SESAM with a cavity and the calculated field pattern at (red). The arrows denote the position of the QD layers. (b) Room temperature PL spectra obtained from nominally identical samples of A and B, grown without the DBR. The dotted (full) line is the calculated (measured) reflectivity obtained from sample B. Noise around 1350–1400 nm is due to water absorption.
(a) Normalized, room temperature TRPL intensity for samples A and B at 1290 nm. (b) Room temperature FWM amplitude obtained at 1290 nm for samples A and B vs delay time . Exponential fits and resulting decay times are indicated.
Parameters for fit to FWM data for samples A and B.
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