Author
- Tatsushi Hamaguchi, Maiko Ito, Jared A. Kearns, Tomohiro Makino, Kentaro Hayashi, Maho Ohara, Noriko Kobayashi, Tatsuro Jyokawa, Eiji Nakayama, Shouetsu Nagane, Koichi Sato, Yuki Nakamura, Yukio Hoshina, Yuichiro Kikuchi, Takumi Watanabe, Yuya Kanitani, Seiji Kasahara, Yoshihiro Kudo, Susumu Kusanagi, Rintaro Koda, Noriyuki Fuutagawa
- * External authors
Highly-efficient operation and mode control in GaN-based VCSELs with a curved mirror
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Abstract
We report the latest progress of gallium nitride-based Vertical-Cavity Surface-Emitting Lasers (VCSELs) containing a curved mirror. Highly uniform and efficient devices were developed. The average threshold current was 0.64 mA with a standard deviation of 0.043 mA. The peak wall-plug efficiency and output power were 13.4 % and 7.6 mW at operating currents of 5.2 mA and 12.8 mA, respectively. We obtained green VCSELs with milliwatt-class outputs and a wall-plug efficiency of 3.7%. We also report the progress of VCSELs with a single-cavity filtering mirror and a cavity length of approximately 25 μm showing highly varying reflectivity spectra, to demonstrate their single-longitudinal mode operation.
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Simultaneous microscopic PA/PL line-scan measurements in InGaN-QWs on a stripe-core GaN Substrate
SPIE Photonics West|2024
Shoki Jinno*, Keito Mori-Tamamura*, Atushi A. Yamaguchi*, Susumu Kusanagi, Yuya Kanitani, Shigetaka Tomiya
We have conducted simultaneous photoacoustic (PA) and photoluminescence (PL) measurements to accurately estima […]
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Determination of deformation potentials of InGaN alloy materials based on photoluminescence polarization measurements under uniaxial stress application
SPIE Photonics West|2024
Atsushi A. Yamaguchi*, Maho Ohara, Tomohiro Makino, Tatsushi Hamaguchi, Rintaro Koda, Keito Mori-Tamamura*
InGaN quantum well (QW) based vertical-cavity surface-emitting lasers, which are usually fabricated on the c-p […]
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