Comparative Study of Monolithic Integrated MMI-Coupler-Based Dual-Wavelength Lasers
| Autor: | Olaf Brox, Lara Sophie Theurer, Jörg Fricke, André Müller, Hans Wenzel, Jan-Philipp Koester, Andrea Knigge, Bernd Sumpf, Günther Tränkle, Anissa Zeghuzi |
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| Rok vydání: | 2022 |
| Předmět: |
Diffraction
Materials science business.industry Physics::Optics Laser Atomic and Molecular Physics and Optics law.invention Longitudinal mode Interference (communication) law Etching (microfabrication) Optoelectronics Laser beam quality Electrical and Electronic Engineering Spectroscopy business Lasing threshold |
| Zdroj: | IEEE Journal of Selected Topics in Quantum Electronics. 28:1-9 |
| ISSN: | 1558-4542 1077-260X |
| Popis: | We present AlGaAs-based monolithically integrated dual-wavelength lasers and master-oscillator power-amplifiers emitting around 785 nm which combine a near diffraction limited beam quality with single longitudinal mode emission, both achieved over a wide range of output powers. This holds for alternating dual wavelength operation which is of interest for applications in spectroscopy as well as for simultaneous dual wavelength operation which can be used to generate THz-radiation. Compared to previous designs the lateral optical confinement is provided by two differently deep etched ridge waveguides. Shallow etching is used in lasing and amplifying sections to ensure single-lateral mode operation, whereas deep etching is employed to form more compact S-bends and to enable the use of multi-mode interference (MMI) couplers instead of Y-couplers. |
| Databáze: | OpenAIRE |
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