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9 March 2020 Large time-dependent nonlinear phase shift of transparent conducting oxides at epsilon-near-zero (Conference Presentation)
Sepehr Benis, Natalia Munera, Eric W. Van Stryland, David J. Hagan
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Proceedings Volume 11264, Nonlinear Frequency Generation and Conversion: Materials and Devices XIX; 112640N (2020) https://doi.org/10.1117/12.2546743
Event: SPIE LASE, 2020, San Francisco, California, United States
Abstract
Materials with vanishing real part of permittivity, also known as epsilon-near-zero, have emerged as a new paradigm to obtain large optical nonlinearities. In this region, light-matter interaction enhances significantly, which gives rise to an unprecedentedly large nonlinear phase shift. The phase sensitivity enhancement is due to the strong dispersion in this spectral region. We present nonlinear optical measurements via the Beam Deflection technique, to directly measure the spectral dependence of the ultrafast nonlinear phase shift of an Indium Tin Oxide thin film. We present simultaneously cross-phase modulation induced frequency changes that depend on how fast the nonlinear phase changes.
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Sepehr Benis, Natalia Munera, Eric W. Van Stryland, and David J. Hagan "Large time-dependent nonlinear phase shift of transparent conducting oxides at epsilon-near-zero (Conference Presentation)", Proc. SPIE 11264, Nonlinear Frequency Generation and Conversion: Materials and Devices XIX, 112640N (9 March 2020); https://doi.org/10.1117/12.2546743
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KEYWORDS
Phase shifts
Transparent conducting oxide
Ultrafast phenomena
Indium
Optical testing
Oxides
Plasma
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