Title :
High-Output-Power Single-Higher-Order Transverse Mode VCSEL With Shallow Surface Relief
Author :
Gadallah, Abdel-Sattar ; Michalzik, Rainer
Author_Institution :
Inst. of Optoelectron., Ulm Univ., Ulm, Germany
Abstract :
We report high-power single-higher-order transverse mode emission of a large-area oxide-confined rectangular-shaped vertical-cavity surface-emitting laser (VCSEL) with a multispot shallow surface relief. Both a record-high output power of 12 mW and a record-low differential series resistance of 18 Ω are achieved. Stable single-higher-order transverse mode emission with a sidemode suppression ratio (SMSR) exceeding 35 dB is maintained up to thermal rollover. Single-polarization lasing along the major axis is achieved with 27.5-dB spectral orthogonal polarization suppression ratio at thermal rollover. Measurements of near- and far-field intensity profiles of the higher-order mode are also presented.
Keywords :
intensity measurement; laser stability; light polarisation; surface emitting lasers; differential series resistance; high-output-power; large-area oxide-confined VCSEL; multispot shallow surface relief; power 12 mW; rectangular-shaped VCSEL; resistance 18 ohm; sidemode suppression ratio; single-polarization lasing; spectral orthogonal polarization suppression ratio; stable single-higher-order transverse mode emission; thermal rollover; vertical-cavity surface-emitting laser; Apertures; Cavity resonators; Laser modes; Optical surface waves; Power generation; Vertical cavity surface emitting lasers; Higher-order mode; polarization control; single-mode; vertical-cavity surface-emitting laser (VCSEL);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2152388
