Digital beam steering from surface-emitting laser diodes based on surface mode emission

Anton Koeck; Alireza Golshani; R. Hainberger; Erich Gornik; Lutz Korte

doi:10.1117/12.273788

2 May 1997 Digital beam steering from surface-emitting laser diodes based on surface mode emission

Anton Koeck, Alireza Golshani, R. Hainberger, Erich Gornik, Lutz Korte

Proceedings Volume 3001, In-Plane Semiconductor Lasers: from Ultraviolet to Midinfrared; (1997) https://doi.org/10.1117/12.273788
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

We present a surface emitting GaAs/AlGaAs laser diode beam steering device based on the surface mode emission (SME) technique. The SME-laser diodes operate in a single-mode and show efficient surface emission into a single beam with a minimum beam divergence of 0.11 degree(s). We demonstrate a large digital beam steering from this device, which is achieved by mode switching. The special SME-structure supports two single-mode emission wavelengths, which are spaced by 8.38 nm. Digital switching between these two modes by a proper current pulse sequence leads to a steering of the surface emitted single-beam by 4.9 degree(s). Presently the beam steering frequency is limited to a maximum value of 0.15 MHz. An optimized device design for a continuous steering of the single, surface emitted beam is proposed.

Citation Download Citation

Anton Koeck, Alireza Golshani, R. Hainberger, Erich Gornik, and Lutz Korte "Digital beam steering from surface-emitting laser diodes based on surface mode emission", Proc. SPIE 3001, In-Plane Semiconductor Lasers: from Ultraviolet to Midinfrared, (2 May 1997); https://doi.org/10.1117/12.273788

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