Electrically pumped semiconductor laser with monolithic control of circular polarization
2014; National Academy of Sciences; Volume: 111; Issue: 52 Linguagem: Inglês
10.1073/pnas.1421991112
ISSN1091-6490
AutoresPatrick Rauter, Jiao Lin, Patrice Genevet, Suraj P. Khanna, Mohammad Lachab, A. G. Davies, E. H. Linfield, Federico Capasso,
Tópico(s)Strong Light-Matter Interactions
ResumoSignificance As powerful semiconductor laser sources open up new possibilities for the realization of compact and versatile spectroscopy and detection systems, monolithic control of the laser output characteristics becomes essential. Whereas engineering of spectral characteristics and beam shape has reached a high level of maturity, manipulation of the polarization state remains challenging. We present a method for monolithic control of the degree of circular polarization by aperture antennas forming a surface-emitting grating on a semiconductor laser cavity and demonstrate its realization for a terahertz quantum cascade laser. Our approach is not limited to the terahertz regime and paves the way to an increased functionality and customizability of monolithic laser sources for a variety of applications (e.g., vibrational circular dichroism spectroscopy).
Referência(s)