title: Colloidal quantum dot lasers built on a passive two-dimensional photonic crystal backbone.
abstract: We report the room-temperature lasing action from two-dimensional photonic crystal (PC) structures composed of a passive Si3N4 backbone with an over-coat of CdSe/CdS/ZnS colloidal quantum dots (CQDs) for optical gain. When optically excited, devices lased in dual PC band-edge modes, with the modal dominance governed by the thickness of the CQD over-layer. The demonstrated laser platform should have an impact on future photonic integrated circuits as the on-chip coupling between active and passive components is readily achievable.
authors.affiliation: Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea. hsjeon@snu.ac.kr and Inter-university Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea.
authors.forename: Hojun
authors.initials: H
authors.lastname: Chang
authors.affiliation: Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea. hsjeon@snu.ac.kr and Inter-university Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea.
authors.forename: Kyungtaek
authors.initials: K
authors.lastname: Min
authors.affiliation: Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea. hsjeon@snu.ac.kr and Inter-university Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea.
authors.forename: Myungjae
authors.initials: M
authors.lastname: Lee
authors.affiliation: Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea. hsjeon@snu.ac.kr and Inter-university Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea.
authors.forename: Minsu
authors.initials: M
authors.lastname: Kang
authors.affiliation: Samsung Advanced Institute of Technology, Suwon 11678, Republic of Korea.
authors.forename: Yeonsang
authors.initials: Y
authors.lastname: Park
authors.affiliation: Samsung Advanced Institute of Technology, Suwon 11678, Republic of Korea.
authors.forename: Kyung-Sang
authors.initials: KS
authors.lastname: Cho
authors.affiliation: Samsung Advanced Institute of Technology, Suwon 11678, Republic of Korea.
authors.forename: Young-Geun
authors.initials: YG
authors.lastname: Roh
authors.affiliation: Samsung Advanced Institute of Technology, Suwon 11678, Republic of Korea.
authors.forename: Sung Woo
authors.initials: SW
authors.lastname: Hwang
authors.affiliation: Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea. hsjeon@snu.ac.kr and Inter-university Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea and Department of Biophysics and Chemical Biology, Seoul National University, Seoul 08826, Republic of Korea.
authors.forename: Heonsu
authors.initials: H
authors.lastname: Jeon