Coherence Properties of Multi-Section Semiconductor Frequency Swept Lasers
| Autor: | Anton V. Kovalev, Konstantin Grigorenko, Natalia Rebrova, Evgeny A. Viktorov, Svetlana Slepneva, Guillaume Huyet |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
medicine.diagnostic_test business.industry Single-mode optical fiber 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Semiconductor laser theory Vertical-cavity surface-emitting laser law.invention 010309 optics Semiconductor Optics Optical coherence tomography law 0103 physical sciences Broadband medicine 0210 nano-technology business Coherence (physics) |
| Zdroj: | 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). |
| DOI: | 10.1109/cleoe-eqec.2019.8873384 |
| Popis: | The development of new Optical Coherence Tomography (OCT) techniques, such as swept-source OCT (SS-OCT), has increased the demand for ultra-fast, broadband and highly coherent swept sources. Among the existing technologies, Fourier Domain Mode-Locked Lasers rely on the periodic modulation of an intra-cavity filter in resonance with the cavity round-trip time [1] while the modulation of the cavity length of a single mode Vertical Cavity Surface Emitting Laser (VCSEL) can provide continuous tuning over 100's of nm [2]. Multi-section semiconductor lasers, such as Sample-Grating Distributed Feedback (SG-DBR) Lasers have been used as widely tunable lasers in the telecom industry for many years and have, more recently, been considered for OCT applications [3]. One of the shortcomings of these lasers, when compared to VCSEL's, is that they cannot have a continuous tuning of a single mode all across a wide spectrum required for OCT application as they exhibit many mode hops during a single sweep. |
| Databáze: | OpenAIRE |
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