Fast-light enhancement by polarization mode coupling in a single optical cavity

David D. Smith; H. Chang; Krishna Myneni; A. T. Rosenberger

doi:10.1117/12.2047568

21 February 2014 Fast-light enhancement by polarization mode coupling in a single optical cavity

David D. Smith, H. Chang, Krishna Myneni, A. T. Rosenberger

Proceedings Volume 8998, Advances in Slow and Fast Light VII; 89980T (2014) https://doi.org/10.1117/12.2047568
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

We present an entirely linear all-optical method of dispersion enhancement that relies on mode coupling between the orthogonal polarization modes of a single optical cavity, eliminating the necessity of using an atomic medium to produce the required anomalous dispersion, which decreases the dependence of the scale factor on temperature and increases signal-to-noise by reducing absorption and nonlinear effects. The use of a single cavity results in common mode rejection of the noise and drift that would be present in a system of two coupled cavities. We show that the scale-factor-to-mode-width ratio is increased above unity for this system and demonstrate tuning of the scale factor by (i) directly varying the mode coupling via rotation of an intracavity half wave plate, and (ii) coherent control of the cavity reflectance which is achieved simply by varying the incident polarization superposition. These tuning methods allow us to achieve unprecedented enhancements in the scale factor and in the scale-factor-to-mode-width ratio by closely approaching the critical anomalous dispersion condition.

Citation Download Citation

David D. Smith, H. Chang, Krishna Myneni, and A. T. Rosenberger "Fast-light enhancement by polarization mode coupling in a single optical cavity", Proc. SPIE 8998, Advances in Slow and Fast Light VII, 89980T (21 February 2014); https://doi.org/10.1117/12.2047568

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