DIRECT DEMONSTRATION OF PICOSECOND-PULSE FREQUENCY SWEEP
- 1 July 1970
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 17 (1), 14-16
- https://doi.org/10.1063/1.1653233
Abstract
A direct measurement using time‐resolved spectroscopy with response times in the picosecond regime shows that wave groups of different frequencies within an ultrashort pulse generated by a Nd‐glass mode‐locked laser arrive at a given point at different times. A curve depicting wavelength versus arrival time for a typical pulse is constructed. The frequency sweep is nonlinear and positive across the most intense portion of the spectrum.Keywords
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