TY - GEN
T1 - Mixed transverse modes in coupled-cavity VCSELs
AU - Frasunkiewicz, Leszek
AU - Czyszanowski, Tomasz
AU - Choquette, Kent D
AU - Panajotov, Krassimir
PY - 2016
Y1 - 2016
N2 - We present experimental results showing alternating lasing and non-lasing regions for the short-wavelength longitudinal mode in a GaAs-based 850 nm coupled-cavity vertical-cavity surface-emitting laser (CC-VCSEL). These regions are situated between the laser threshold and roll-off for this mode. The analyzed structure consists of two identical AlGaAs cavities with GaAs quantum wells, separated with 11.5 pairs of middle DBR. The current apertures are realized by ion-implantation for the top cavity and selective oxidation for the bottom cavity. We then perform fully-vectorial three-dimensional cold-cavity optical simulations to theoretically investigate optical density radial and on-optical-axis profiles of the first order transverse modes corresponding to the two longitudinal modes. We show that the short-wavelength fundamental mode λS-LP01 is subject to periodic changes of its optical field distribution when changing the oxide aperture radius, which can lead to weaker resonance of the short-wavelength LP01 mode within the coupled cavity structure.
AB - We present experimental results showing alternating lasing and non-lasing regions for the short-wavelength longitudinal mode in a GaAs-based 850 nm coupled-cavity vertical-cavity surface-emitting laser (CC-VCSEL). These regions are situated between the laser threshold and roll-off for this mode. The analyzed structure consists of two identical AlGaAs cavities with GaAs quantum wells, separated with 11.5 pairs of middle DBR. The current apertures are realized by ion-implantation for the top cavity and selective oxidation for the bottom cavity. We then perform fully-vectorial three-dimensional cold-cavity optical simulations to theoretically investigate optical density radial and on-optical-axis profiles of the first order transverse modes corresponding to the two longitudinal modes. We show that the short-wavelength fundamental mode λS-LP01 is subject to periodic changes of its optical field distribution when changing the oxide aperture radius, which can lead to weaker resonance of the short-wavelength LP01 mode within the coupled cavity structure.
KW - 850 nm light emitter
KW - Vertical-Cavity Surface-Emitting Laser
KW - coupled cavities
KW - numerical simulation
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U2 - 10.1117/12.2227845
DO - 10.1117/12.2227845
M3 - Conference contribution
AN - SCOPUS:84988443420
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Semiconductor Lasers and Laser Dynamics VII
A2 - Valle, Angel
A2 - Michalzik, Rainer
A2 - Panajotov, Krassimir
A2 - Sciamanna, Marc
PB - SPIE
T2 - Semiconductor Lasers and Laser Dynamics VII
Y2 - 4 April 2016 through 7 April 2016
ER -