Open AccessMeasuring pulse-front tilt in ultrashort pulse laser beams without ambiguity of its sign using single-shot tilted pulse-front autocorrelator
Author(s) -
Ashok Sharma,
Rajesh Kumar Patidar,
M. Raghuramaiah,
P. A. Naik,
P. D. Gupta
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.013131
Subject(s) - optics , autocorrelator , multiphoton intrapulse interference phase scan , pulse (music) , ultrashort pulse , femtosecond pulse shaping , tilt (camera) , laser , physics , beam (structure) , pulse duration , beam parameter product , laser beam quality , prism , wavefront , bandwidth limited pulse , materials science , laser beams , mechanical engineering , detector , engineering
The measurement of pulse-front tilt (PFT) in ultrashort pulse laser beams, without ambiguity of its sign, has been carried out using an in-house built single-shot tilted pulse-front autocorrelator (TPFAC) based on second harmonic generation in non-linear crystal. The experiment is carried out for the beam propagation through a single prism and a pair of prisms. Expressions of PFT angle have been derived to account for beam size, beam propagation effects and for arbitrary incidence of the laser beam. The measured PFT angles were found in accordance with theoretically calculated values. The calculated sensitivity of TPFAC is found to be larger than that offered by the other techniques.