High-sensitivity pulse spectrogram measurement using two-photon absorption in a semiconductor at 15-m wavelength
- 31 July 2000
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 7 (3) , 135-140
- https://doi.org/10.1364/oe.7.000135
Abstract
A femtosecond pulse characterization technique is developed using frequency-resolved optical gating based on the two-photon absorption in an InP crystal. The technique provides direct visual monitoring of pulse frequency chirping in the time-spectral domain for femtosecond pulses with a pulse energy as low as 3.8 pJ. Pulse chirping and pedestal wings of 10-GHz optical fiber solitons are characterized experimentally for the first time by this technique.Keywords
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