Ultrafast harmonic mode-locking of monolithic compound-cavity laser diodes incorporating photonic-bandgap reflectors

Dan A. Yanson; Michael W. Street; Stewart D. McDougall; Iain G. Thayne; John H. Marsh; Evgenii A. Avrutin

doi:10.1117/12.447101

30 October 2001 Ultrafast harmonic mode-locking of monolithic compound-cavity laser diodes incorporating photonic-bandgap reflectors

Dan A. Yanson, Michael W. Street, Stewart D. McDougall, Iain G. Thayne, John H. Marsh, Evgenii A. Avrutin

Author Affiliations +

Proceedings Volume 4598, Photonics Technology in the 21st Century; (2001) https://doi.org/10.1117/12.447101
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore

Abstract

We present the first demonstration of reproducible harmonic modelocked operation from a novel design of monolithic semiconductor laser comprising a compound cavity formed by a 1-D photonic-bandgap (PBG) mirror. Modelocking is achieved at a harmonic of the fundamental round-trip frequency with pulse repetition rates from 131 GHz up to a record high frequency of 2.1 THz. The devices are fabricated from GaAs/AlGaAs material emitting at a wavelength of 860 nm and incorporate two gain sections with an etched PBG reflector between them, and a saturable absorber section. Autocorrelation studies are reported, which allow the device behaviour for different modelocking frequencies, compound cavity ratios, and type and number of intra-cavity reflectors to be analyzed. The highly reflective PBG microstructures are shown to be essential for subharmonic-free modelocking operation of the high-frequency devices. We have also demonstrated that the multi-slot PBG reflector can be replaced by two separate slots with smaller reflectivity. These lasers may find applications in terahertz imaging, medicine, ultrafast optical links, and atmospheric sensing.

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Dan A. Yanson, Michael W. Street, Stewart D. McDougall, Iain G. Thayne, John H. Marsh, and Evgenii A. Avrutin "Ultrafast harmonic mode-locking of monolithic compound-cavity laser diodes incorporating photonic-bandgap reflectors", Proc. SPIE 4598, Photonics Technology in the 21st Century, (30 October 2001); https://doi.org/10.1117/12.447101

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