Beam Pattern Projecting On-Chip Lasers at Visible Wavelength

Kurosaka, Yoshitaka; Hirose, Keikichi; Ito, Akio; Hitaka, Masahiro; Higuchi, Akira; Sugiyama, Takahiro; Takiguchi, Yuichi; Nomoto, Yoshiro; Uenoyama, Soh; Edamura, Tadataka

doi:10.1364/cleo_si.2019.sm4n.2

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…To apply for display or projection devices, it is expected to realize PCSELs in visible wavelength range. In CLEO 2019, Hamamatsu demonstrated the integrable phase-modulating surface-emitting lasers, also based on PCSELs, at red wavelength of 684 nm for the first time [2]. Due to light absorption of GaAs substrate and poor properties of AlGaInP materials, the device was top emitted with pulsed current under 50-ns width and 10-kHz frequency.…”

Section: Introductionmentioning

confidence: 99%

Photonic-crystal surface-emitting lasers in red wavelength range

Wang

Lin

2023

Photonic and Phononic Properties of Engineered Nanostructures XIII

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Photonic-crystal (PC) surface-emitting lasers in red wavelength range are demonstrated without epitaxial regrowth in this work. Two-dimensional PCs were patterned and circular shaped holes were etched from GaAs contact down to AlInP cladding layers to form the "PC slab-on-substrate" structure. Indium-tin-oxide was then deposited to facilitate both electrical injection and optical transmission. The fabricated devices were characterized by pulsed current source. The lasing wavelength was around 664 nm at designed lattice period of 208 nm. The peak intensity was over 6 mW at peak current of 2.5 A. The far-field pattern exhibited dual lobes separated by 3.5 degree and the beam divergence perpendicular to the lobes was about 1 degree.

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Section: Introductionmentioning

confidence: 99%

Photonic-crystal surface-emitting lasers in red wavelength range

Wang

Lin

2023

Photonic and Phononic Properties of Engineered Nanostructures XIII

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“…With subtle changes of crystal basis, a large resonance area with high output power can maintain a single mode operation [5]. Moreover, PC-SELs are versatile; polarization [6,7], beam pattern [8,9] and beam direction [10,11] can be tailored by designing the unit cell structure properly. Recently, PC-SELs have drawn increasing attention due to their promising application to light detection and ranging (LiDAR) as well as laser processing [12,13].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Photonic-Crystal Surface-Emitting Lasers with Air-Hole and Air-Pillar Structures

Yang¹,

Kuo²,

Lin³

2021

Photonics

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Photonic-crystal surface-emitting lasers (PC-SELs), with and without regrowth, are theoretically simplified as air-hole and air-pillar structures, respectively. In this paper, square-latticed air-hole and air-pillar PC-SELs are simulated by a three-dimensional coupled-wave theory model and the design guideline is illustrated with a PC basis of a right isosceles triangular and double circular shapes. The optimum PC filling factor is determined by infinite PC cavity analysis and the slope efficiency of finite-size PC-SEL is then calculated for the lowest threshold band-edge mode. In comparison with air-hole PC-SEL, air-pillar PC-SEL exhibits lower threshold gain, larger gain discrimination but lower slope efficiency. To achieve slope efficiency of comparable value, the cavity area of air-pillar PC-SEL is about four times larger than that of air-hole PC-SEL.

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