24 April 2018 Evaluation of Laguerre-Gaussian beam generated with integrable phase-modulating surface-emitting lasers
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Proceedings Volume 10712, Optical Manipulation Conference; 107120P (2018) https://doi.org/10.1117/12.2316413
Event: SPIE Structured Light, 2018, Yokohama, Japan
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.
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Yu Takiguchi, Kazuyoshi Hirose, Takahiro Sugiyama, So Uenoyama, Yoshiro Nomoto, Yoshitaka Kurosaka, "Evaluation of Laguerre-Gaussian beam generated with integrable phase-modulating surface-emitting lasers ", Proc. SPIE 10712, Optical Manipulation Conference, 107120P (24 April 2018); doi: 10.1117/12.2316413; https://doi.org/10.1117/12.2316413
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