Microlasers based on effective index confined slow light modes in photonic crystal waveguides.
We present the design, theory and experimental implementation of a low modal volume microlaser based on a line-defect 2D-photonic crystal waveguide. The lateral confinement of low-group velocity modes is controlled by the post-processing of 1 to 3microm wide PMMA strips on top of two dimensional photonic crystal waveguides. Modal volume around 1.3 (lambda/n)(3) can be achieved using this scheme. We use this concept to fabricate microlaser devices from an InP-based heterostructure including InAs(0.65)P(0.35) quantum wells emitting around 1550nm and bonded onto a fused silica wafer. We observe stable, room-temperature laser operation with an effective lasing threshold around 0.5mW.
Université de Lyon, Institut des Nanotechnologies de Lyon-INL, UMR CNRS 5270, Ecole Centrale de Lyon, 36 Avenue Guy de Collongue, F-69134 Ecully, France.
Samuele
S
Gardin
Frederic
F
Bordas
Xavier
X
Letartre
Christian
C
Seassal
Adel
A
Rahmani
Renato
R
Bozio
Pierre
P
Viktorovitch
D003198:Computer Simulation; D003461:Crystallography; D007834:Lasers; D008027:Light; D008855:Microscopy, Electron, Scanning; D017785:Photons; D019904:Polymethyl Methacrylate / Q000737:chemistry; D013057:Spectrum Analysis
D019904:Polymethyl Methacrylate