Longitudinal mode control in long cavity VCSELs with a curved mirror

Longitudinal mode control in long cavity VCSELs with a curved mirror

A single cavity filtering mirror with a highly varying reflectivity spectrum was used to demonstrate a single longitudinal mode operation for a VCSEL with a ∼25 μ m cavity length. The 443.5 nm lasing peak had an SMSR of 42 dB at 9 mA, 70 kA cm −2 . Increasing the number of DBR pairs between the VCSE...

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Veröffentlicht in:Applied physics express 2022-07, Vol.15 (7), p.72009
Hauptverfasser: Kearns, Jared A., Hamaguchi, Tatsushi, Hayashi, Kentaro, Ohara, Maho, Makino, Tomohiro, Ito, Maiko, Kobayashi, Noriko, Jyoukawa, Tatsurou, Nakayama, Eiji, Nagane, Shoetsu, Sato, Koichi, Nakamura, Yuki, Hoshina, Yukio, Koda, Rintaro, Futagawa, Noriyuki
Format: Artikel
Sprache:eng
Schlagworte:
Filtering Mirror
GaN
Mode Control
VCSEL
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Zusammenfassung:A single cavity filtering mirror with a highly varying reflectivity spectrum was used to demonstrate a single longitudinal mode operation for a VCSEL with a ∼25 μ m cavity length. The 443.5 nm lasing peak had an SMSR of 42 dB at 9 mA, 70 kA cm −2 . Increasing the number of DBR pairs between the VCSEL and filtering mirror cavity reduced the simulated optical standing wave in the mirror cavity by 57% and experimentally gave a 42% increase in the slope efficiency to achieve 2.56 mW at 7 mA from a device with a 4 μ m aperture with a single longitudinal mode.
ISSN:1882-0778
1882-0786
DOI:10.35848/1882-0786/ac7697