Applied Physics B

, Volume 87, Issue 4, pp 655–663

Simultaneous visual detection of pulse chirp and temporal asymmetry in ultrashort laser pulses using analysis of unbalanced interferometric correlation envelope (ICE) functions


DOI: 10.1007/s00340-007-2651-5

Cite this article as:
Sharma, A., Naik, P. & Gupta, P. Appl. Phys. B (2007) 87: 655. doi:10.1007/s00340-007-2651-5


A simple method that uses envelope functions of unbalanced interferometric (auto/cross) correlation signals has been presented for simultaneous visual detection of pulse chirp and asymmetry, without direction-of-time ambiguity in ultrashort laser pulses. The ambiguity issues of unbalanced interferometric correlation envelope (ICE) difference signals have been studied. It is found that unbalanced ICE difference signals are visually different corresponding to practically indistinguishable unbalanced interferometric autocorrelation (IAC) signals for a distinct symmetric–asymmetric pulse pair with identical intensity autocorrelation and power spectra. The theoretical analysis of ICE signals is supported by experimental unbalanced IAC signals obtained using 200 fs laser pulses from a cw mode-locked Nd:phosphate laser oscillator.

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.Laser Plasma DivisionRaja Ramanna Centre for Advanced TechnologyIndoreIndia

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