On the Chirp of Narrowband Terahertz Pulses Generated by Photomixing with Nonlinearly Chirped Laser Pulse Pairs
Authors:
Open Access
- 1 March 2013
- journal article
- Published by IOP Publishing in Applied Physics Express
- Vol. 6 (3) , 032701
Abstract
The spectral linewidth and intensity of narrowband terahertz pulses generated by photomixing with beating of nonlinearly chirped laser pulse pairs are studied. The direct relationship between the dispersion of the pump pulse stretcher and the chirp of the terahertz pulse is shown. Simple analytical expressions for the linewidth and intensity of the terahertz spectrum are obtained and their validity is confirmed by numerical simulations. Generation of narrowband terahertz pulses with minimal chirp is demonstrated.Keywords
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