Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

From vertical-cavities to hybrid metal/photonic-crystal nanocavities: towards high-efficiency nanolasers

Not Accessible

Your library or personal account may give you access

Abstract

We provide a numerical study showing that a bottom reflector is indispensable to achieve unidirectional emission from a photonic-crystal (PhC) nanolaser. First, we study a PhC slab nanocavity suspended over a flat mirror formed by a dielectric or metal substrate. We find that the laser’s vertical emission can be enhanced by more than a factor of 6 compared with the device in the absence of the mirror. Then, we study the situation where the PhC nanocavity is in contact with a flat metal surface. The underlying metal substrate may serve as both an electrical current pathway and a heat sink, which would help achieve continuous-wave lasing operation at room temperature. The design of the laser emitting at 1.3 μm reveals that a relatively high cavity Q of over 1000 is achievable assuming room-temperature gold as a substrate. Furthermore, linearly polarized unidirectional vertical emission with the radiation efficiency over 50% can be achieved. Finally, we discuss how this hybrid design relates to various plasmonic cavities and propose a useful quantitative measure of the degree of the “plasmonic” character in a general metallic nanocavity.

©2012 Optical Society of America

Full Article  |  PDF Article
More Like This
High Q H1 photonic crystal nanocavities with efficient vertical emission

Hiroyuki Takagi, Yasutomo Ota, Naoto Kumagai, Satomi Ishida, Satoshi Iwamoto, and Yasuhiko Arakawa
Opt. Express 20(27) 28292-28300 (2012)

Optofluidic integration of a photonic crystal nanolaser

Se-Heon Kim, Jae-Hoon Choi, Seung-Kon Lee, Shin-Hyun Kim, Seung-Man Yang, Yong-Hee Lee, Christian Seassal, Philippe Regrency, and Pierre Viktorovitch
Opt. Express 16(9) 6515-6527 (2008)

Purcell factor for a cylindrical nanocavity: ab initio analytical approach

Vladimir Bordo
J. Opt. Soc. Am. B 29(7) 1799-1809 (2012)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (30)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved