Bright emission from a random Raman laser

Brett H. Hokr, Joel N. Bixler, Michael T. Cone, John D. Mason, Hope T. Beier, Gary D. Noojin, Georgi I. Petrov, Leonid A. Golovan, Robert J. Thomas, Benjamin A. Rockwell and Vladislav V. Yakovlev ()
Additional contact information
Brett H. Hokr: Texas A&M University
Joel N. Bixler: Texas A&M University
Michael T. Cone: Texas A&M University
John D. Mason: Texas A&M University
Hope T. Beier: 711th Human Performance Wing, Human Effectiveness Directorate, Optical Radiation Bioeffects Branch
Gary D. Noojin: TASC Inc.
Georgi I. Petrov: Texas A&M University
Leonid A. Golovan: Faculty of Physics, M. V. Lomonosov Moscow State University
Robert J. Thomas: 711th Human Performance Wing, Human Effectiveness Directorate, Optical Radiation Bioeffects Branch
Benjamin A. Rockwell: 711th Human Performance Wing, Human Effectiveness Directorate, Optical Radiation Bioeffects Branch
Vladislav V. Yakovlev: Texas A&M University

Nature Communications, 2014, vol. 5, issue 1, 1-5

Abstract: Abstract Random lasers are a developing class of light sources that utilize a highly disordered gain medium as opposed to a conventional optical cavity. Although traditional random lasers often have a relatively broad emission spectrum, a random laser that utilizes vibration transitions via Raman scattering allows for an extremely narrow bandwidth, on the order of 10 cm−1. Here we demonstrate the first experimental evidence of lasing via a Raman interaction in a bulk three-dimensional random medium, with conversion efficiencies on the order of a few percent. Furthermore, Monte Carlo simulations are used to study the complex spatial and temporal dynamics of nonlinear processes in turbid media. In addition to providing a large signal, characteristic of the Raman medium, the random Raman laser offers us an entirely new tool for studying the dynamics of gain in a turbid medium.

Date: 2014
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DOI: 10.1038/ncomms5356

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