Continuous-wave operation of 1550 nm low-threshold triple-lattice photonic-crystal surface-emitting lasers.

ABSTRACT: Benefitting from narrow beam divergence, photonic crystal surface-emitting lasers are expected to play an essential role in the ever-growing fields of optical communication and light detection and ranging. Lasers operating with 1.55 μm wavelengths have attracted particular attention due to their minimum fiber loss and high eye-safe threshold. However, high interband absorption significantly decreases their performance at this 1.55 μm wavelength. Therefore, stronger optical feedback is needed to reduce their threshold and thus improve the output power. Toward this goal, photonic-crystal resonators with deep holes and high dielectric contrast are often used. Nevertheless, the relevant techniques for high-contrast photonic crystals inevitably complicate fabrication and reduce the final yield.

SUBMITTER: Wang Z 

PROVIDER: S-EPMC11251162 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature