General recipe to realize photonic-crystal surface-emitting lasers with 100-W-to-1-kW single-mode operation

Takuya Inoue (), Masahiro Yoshida, John Gelleta, Koki Izumi, Keisuke Yoshida, Kenji Ishizaki, Menaka Zoysa and Susumu Noda ()
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Takuya Inoue: Photonics and Electronics Science and Engineering Center, Kyoto University
Masahiro Yoshida: Kyoto University
John Gelleta: Kyoto University
Koki Izumi: Kyoto University
Keisuke Yoshida: Kyoto University
Kenji Ishizaki: Kyoto University
Menaka Zoysa: Photonics and Electronics Science and Engineering Center, Kyoto University
Susumu Noda: Photonics and Electronics Science and Engineering Center, Kyoto University

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract Realization of one-chip, ultra-large-area, coherent semiconductor lasers has been one of the ultimate goals of laser physics and photonics for decades. Surface-emitting lasers with two-dimensional photonic crystal resonators, referred to as photonic-crystal surface-emitting lasers (PCSELs), are expected to show promise for this purpose. However, neither the general conditions nor the concrete photonic crystal structures to realize 100-W-to-1-kW-class single-mode operation in PCSELs have yet to be clarified. Here, we analytically derive the general conditions for ultra-large-area (3~10 mm) single-mode operation in PCSELs. By considering not only the Hermitian but also the non-Hermitian optical couplings inside PCSELs, we mathematically derive the complex eigenfrequencies of the four photonic bands around the Γ point as well as the radiation constant difference between the fundamental and higher-order modes in a finite-size device. We then reveal concrete photonic crystal structures which allow the control of both Hermitian and non-Hermitian coupling coefficients to achieve 100-W-to-1-kW-class single-mode lasing.

Date: 2022
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DOI: 10.1038/s41467-022-30910-7

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