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Proceedings Paper

Evaluation of Laguerre-Gaussian beam generated with integrable phase-modulating surface-emitting lasers
Author(s): Yu Takiguchi; Kazuyoshi Hirose; Takahiro Sugiyama; So Uenoyama; Yoshiro Nomoto; Yoshitaka Kurosaka
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Paper Abstract

We demonstrated direct surface-emitting of Laguerre–Gaussian beams with wavefront modulated lasers. This integrable phase-modulating surface-emitting lasers has potential to emit arbitrarily configured beam patterns without requiring any optical elements or scanning devices. The fabricated devices are on-chip-sized, making them suitable for integration. We introduce a phase-modulating resonator in a semiconductor laser, which analogically behaves as phaseonly holograms, kinoform, to allow the concurrent realization of lasing and phase modulation. Particularly, this is promising in the use for free-space optical communications due to the fact that coaxial propagation of orbital angular momentum (OAM) properties with different OAM mode states are mutually orthogonal.

Paper Details

Date Published: 24 April 2018
PDF: 2 pages
Proc. SPIE 10712, Optical Manipulation Conference, 107120P (24 April 2018); doi: 10.1117/12.2316413
Show Author Affiliations
Yu Takiguchi, Hamamatsu Photonics KK (Japan)
Kazuyoshi Hirose, Hamamatsu Photonics KK (Japan)
Takahiro Sugiyama, Hamamatsu Photonics KK (Japan)
So Uenoyama, Hamamatsu Photonics KK (Japan)
Yoshiro Nomoto, Hamamatsu Photonics KK (Japan)
Yoshitaka Kurosaka, Hamamatsu Photonics KK (Japan)

Published in SPIE Proceedings Vol. 10712:
Optical Manipulation Conference
Takashige Omatsu; Hajime Ishihara; Keiji Sasaki, Editor(s)

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