Measurements of the GVD of Water and Methanol and Laser Pulse Characterization Using Direct Imaging Methods

Authors

Timothy Scarborough, University of Nebraska - Lincoln
Chad Petersen, University of Nebraska-LincolnFollow
Cornelis J. Uiterwaal, University of Nebraska - LincolnFollow

Date of this Version

2008

Comments

Published in New Journal of Physics 10 (2008) 103011. 1367-2630/08/103011+10$30.00 Copyright © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Used by permission.

Abstract

We report experimental values of the group velocity dispersion (GVD) of water and methanol at 800 nm. We find GVD^water ₈₀₀ = (25.71± 0.5) fs² mm⁻¹ and GVD^methanol ₈₀₀ = (33.56±0.5) fs² mm^-1. These were measured by sending 50 fs, 800 nm pulses with various amounts of chirp through a glass cell filled with a solution of fluorescein in these solvents and recording the production of visible light from the side using a commercial digital camera. This simple setup also gives quantitative information on the duration of our pulses and lets us check independently the correct operation of our grating-based pulse compressor. Results are compared to FROG measurements.