Highly efficient operation and uniform characteristics of curved mirror vertical-cavity surface-emitting lasers. (1st January 2023)

• Record Type: Journal Article
• Authors: Ito, Maiko; Hamaguchi, Tatsushi; Makino, Tomohiro; Hayashi, Kentaro; Kearns, Jared A.; Ohara, Maho; Kobayashi, Noriko; Nagane, Shoetsu; Sato, Koichi; Nakamura, Yuki; Hoshina, Yukio; Jyoukawa, Tatsurou; Watanabe, Takumi; Kikuchi, Yuichiro; Kasahara, Seiji; Kusanagi, Susumu; Kanitani, Yuya; Kudo, Yoshihiro; Nakayama, Eiji; Koda, Rintaro; Futagawa, Noriyuki
• Is Part Of: Applied physics express. Volume 16:Number 1(2023)
• Publication Date: 2023-01-01
• Subjects: VCSEL -- GaN -- uniformity -- curved mirror -- high efficiency; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.35848/1882-0786/acace8
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: This study obtained highly uniform and efficient GaN-based vertical-cavity surface-emitting lasers with curved mirrors from a single wafer. The average threshold current ( I th ) and the optical output power ( P max ) of 14 chips measured up to 7.0 mA were 0.64 mA and 4.5 mW, respectively. The standard deviations of I th and P max were 6.7% and 5.1%, respectively. Additionally, the best chip showed maximum values of wall plug efficiency and output power of 13.4% and 7.6 mW, respectively, at 5.2 mA and 12.8 mA operating currents.