Single mode emission and non-stochastic laser system based on disordered point-sized structures: Toward a tuneable random laser

R. Bardoux, A. Kaneta, M. Funato, Koichi Okamoto, Y. Kawakami, A. Kikuchi, K. Kishino

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

As an advantage, random lasers may be elaborated from a large variety of materials and do not require any cavity oscillators that usually necessitate complicated and expensive fabrication techniques. Since the feedback process of those non-conventional laser systems is provided by light interference in a disordered medium, spectral and temporal uncertainties are usually considered as an intrinsic part of their optical proprieties. We investigated random laser action under two photon absorption experiments through an auto-organized InGaN/GaN quantum-disks ensemble. Thanks to our experimental approach, we evidence random lasing based on a gain medium constituted by point-sized structures. In such context, a stabilised and individual emission mode is observed as for conventional semiconductor lasers. By controlling the emission energy of these nanostructures, a tuneable and stable random laser may be built. Moreover, our findings suggest that disordered medium should play an important role in the conception of low cost quantum dot and up conversion laser systems.

Original languageEnglish
Pages (from-to)9262-9268
Number of pages7
JournalOptics Express
Volume19
Issue number10
DOIs
Publication statusPublished - May 9 2011

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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    Bardoux, R., Kaneta, A., Funato, M., Okamoto, K., Kawakami, Y., Kikuchi, A., & Kishino, K. (2011). Single mode emission and non-stochastic laser system based on disordered point-sized structures: Toward a tuneable random laser. Optics Express, 19(10), 9262-9268. https://doi.org/10.1364/OE.19.009262