Phase and group delay control of femtosecond pulses with liquid crystal cells and application to hyperspectral imaging

Aurélie Jullien; Umberto Bortolozzo; Stefania Residori; Stéphanie Grabielle; Nicolas Forget; Jean-Pierre Huignard

doi:10.1117/12.2261211

20 February 2017 Phase and group delay control of femtosecond pulses with liquid crystal cells and application to hyperspectral imaging

Aurélie Jullien, Umberto Bortolozzo, Stefania Residori, Stéphanie Grabielle, Nicolas Forget, Jean-Pierre Huignard

Author Affiliations +

Proceedings Volume 10119, Slow Light, Fast Light, and Opto-Atomic Precision Metrology X; 101191B (2017) https://doi.org/10.1117/12.2261211
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

We present a tunable delay line suitable for femtosecond pulse trains based on cascaded electrically-controlled nematic liquid crystal cells. Simple and collinear implementations enable to shape the achievable temporal range, with sub-femtosecond temporal accuracy, thus disclosing ultrafast applications in nematic liquid crystal-based devices. Independent control of the phase and group delay of femtosecond pulses is demonstrated. Furthermore, we successfully extend the method to Fourier-Transform hyperspectral imaging. The proposed devices are compact, low-cost, with no moving parts, scalable in size and spectral range.

Citation Download Citation

Aurélie Jullien, Umberto Bortolozzo, Stefania Residori, Stéphanie Grabielle, Nicolas Forget, and Jean-Pierre Huignard "Phase and group delay control of femtosecond pulses with liquid crystal cells and application to hyperspectral imaging", Proc. SPIE 10119, Slow Light, Fast Light, and Opto-Atomic Precision Metrology X, 101191B (20 February 2017); https://doi.org/10.1117/12.2261211

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