Frequency-modulated combs: origins and opportunities

David Burghoff

doi:10.1117/12.2595906

1 August 2021 Frequency-modulated combs: origins and opportunities

David Burghoff

Proceedings Volume 11827, Terahertz Emitters, Receivers, and Applications XII; 118270B (2021) https://doi.org/10.1117/12.2595906
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

In certain lasers, including terahertz quantum cascade lasers, frequency combs can form whose output is frequency- modulated (FM) linearly in time. While this result had been replicated experimentally and numerically, an analytical description had been elusive. We will discuss our recent work showing how this can be achieved. By deriving a mean-field theory for lasers analogous to the Lugiato-Lefever equation and solving it analytically with some weak assumptions, we show that it simplifies to the nonlinear Schrodinger equation with a phase potential. The phase of its solution is piecewise quadratic in time—an FM comb. Our results apply to many lasers and explains the diverse array of experimental observations. We will discuss prospects and opportunities for improving the performance of these combs.

Conference Presentation

Citation Download Citation

David Burghoff "Frequency-modulated combs: origins and opportunities", Proc. SPIE 11827, Terahertz Emitters, Receivers, and Applications XII, 118270B (1 August 2021); https://doi.org/10.1117/12.2595906

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