Sub-gigahertz beam switching of vertical-cavity surface-emitting laser with transverse coupled cavity

Journal Article · Mon Aug 17 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4929147· OSTI ID:22489105

Nakahama, M.; Gu, X.; Sakaguchi, T. ^[1]; Matsutani, A. ^[2]; Ahmed, M.; Bakry, A. ^[3]; Koyama, F. ^[1]

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1. Photonics Integration System Research Center, Tokyo Institute of Technology, 4259-R2-22, Nagatsuta, Midori-ku, Yokohama 226-8503 (Japan)
2. Semiconductor and MEMS Processing Center, Tokyo Institute of Technology, 4259-R2-22, Nagatsuta, Midori-ku, Yokohama 226-8503 (Japan)
3. Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589 (Saudi Arabia)

We report a high-speed electrical beam switching of vertical cavity surface emitting laser with a transverse coupled cavity. A high speed (sub-gigahertz) and large deflection angle (>30°) beam switching is demonstrated by employing the transverse mode switching. The angular switching speed of 900 MHz is achieved with narrow beam divergence of below 4° and extinction ratio of 8 dB. We also measured the near- and far-field patterns to clarify the origin of the beam switching. We present a simple one-dimensional Bragg reflector waveguide model, which well predicts the beam switching characteristic.

• OSTI ID: 22489105
• Journal Information: Applied Physics Letters, Vol. 107, Issue 7; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAMS
LASERS
MHZ RANGE 100-1000
ORIGIN
SURFACES
VELOCITY
WAVEGUIDES