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

Design of mechanically-tunable photonic crystal split-beam nanocavity

Not Accessible

Your library or personal account may give you access

Abstract

Photonic crystal split-beam nanocavities allow for ultra-sensitive optomechanical transductions but are degraded due to their relatively low optical quality factors. We have proposed and experimentally demonstrated a new type of one-dimensional photonic crystal split-beam nanocavity optimized for an ultra-high optical-quality factor. The design is based on the combination of the deterministic method and hill-climbing algorithm. The latter is the simplest and most straightforward method of the local search algorithm that provides the local maximum of the chosen quality factors. This split-beam nanocavity is made up of two mechanical uncoupled cantilever beams with Bragg mirrors patterned onto it and separated by a 75-nm air gap. Experimental results emphasize that the quality factor of the second-order TE mode can be as high as 1.99×104. Additionally, one beam of the device is actuated in the lateral direction with the aid of a NEMS actuator, and the quality factor maintains quite well even if there is a lateral offset up to 64 nm. Potentially promising applications, such as sensitive optomechanical torque sensor, local tuning of Fano resonance, all-optical-reconfigurable filters, etc., are foreseen.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Optical design of split-beam photonic crystal nanocavities

Aaron C. Hryciw and Paul E. Barclay
Opt. Lett. 38(10) 1612-1614 (2013)

Design of nanowire-induced nanocavities in photonic crystal disks

Sylvain Sergent, Hideaki Taniyama, and Masaya Notomi
Opt. Lett. 42(24) 5121-5124 (2017)

Asymmetric out-of-plane power distribution in a two-dimensional photonic crystal nanocavity

Yasutomo Ota, Satoshi Iwamoto, and Yasuhiko Arakawa
Opt. Lett. 40(14) 3372-3375 (2015)

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 (5)

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 (1)

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