Ultrafast nonlinear subwavelength solid immersion spectroscopy at T=8 K
- 29 March 1999
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 74 (13) , 1791-1793
- https://doi.org/10.1063/1.123087
Abstract
Pump–probe measurements with a subwavelength spatial resolution of 355 nm and a temporal resolution of 130 fs have been performed in a multiple quantum well sample at T=8 K. A solid immersion lens was used to increase the spatial resolution to 0.41⋅λ and the effective numerical aperture to 1.23, demonstrating that the limit of conventional microscopy has been surpassed. The lateral carrier transport was investigated on subpicosecond timescales.Keywords
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