Journal article
High-repetition-rate white-light pump-probe spectroscopy with a tapered fiber
Light Technology Institute and Center for Functional Nanostructures (CFN), Universität Karlsruhe (TH), Kaiserstrasse 12, D-76131 Karlsruhe, Germany. martin.punke@lti.uni-karlsruhe.de1
We have realized a 76 MHz white-light differential transmission spectroscopy system. The technique employs a Ti:sapphire laser oscillator and a tapered fiber to generate a white-light continuum spanning almost the full visible to near-infrared spectral range. Using acousto-optical modulation and subsequent lock-in detection, transient relative transmission changes as small as 10(-5) are detected.
The method is applied to study the ultrafast gain dynamics of the active layer of a vertical-external-cavity surface-emitting laser based on a multiple-quantum-well structure.
| Language: | English |
|---|---|
| Year: | 2006 |
| Pages: | 1157-1159 |
| ISSN: | 15394794 and 01469592 |
| Types: | Journal article |
| DOI: | 10.1364/ol.31.001157 |
