A Caltech Library Service

Unidirectional vertical emission from photonic crystal nanolasers

Kim, Se-Heon and Lee, Yong-Hee and Huang, Jingqing and Scherer, Axel (2009) Unidirectional vertical emission from photonic crystal nanolasers. In: 11th International Conference on Transparent Optical Networks. IEEE , Piscataway, NJ, pp. 1-4. ISBN 978-1-4244-4825-8.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


Here, we emphasize the importance of using a bottom reflector to achieve unidirectional vertical emission from an ultra-small light emitter. Specifically, we have considered a photonic crystal slab nanocavity laser placed in the vicinity of a perfect mirror. By choosing near one-wavelength distance between the bottom reflector and the cavity, over 80% of photons generated inside the laser cavity can funnel into a small divergence angle of ±30°. It is also interesting to observe that the natural radiation rate (∼1/Q factor) of the nanocavity mode can be modified by varying the gap size, which is analogous to the famous cavity quantum electrodynamics effect for a point dipole source placed near a perfect mirror. A simple, comprehensive plane wave interference model is presented to explain the observed over six-fold vertical emission enhancement. Furthermore, we propose some of the very practical nanolaser designs based on a metal bonding technology, which may enable continuous current injection operation at room-temperature.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Additional Information:© 2009 IEEE. This work was supported in part by the Air Force Office of Scientific Research (FA9550-04-1-0434), the Army Research Office (W911NF-07-1-0277), and the National Science Foundation (EEC-0812072). We gratefully acknowledge critical support and infrastructure provided for this work by the Kavli Nanoscience Institute at Caltech.
Group:Kavli Nanoscience Institute
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-04-1-0434
Army Research Office (ARO)W911NF-07-1-0277
Kavli Nanoscience InstituteUNSPECIFIED
Record Number:CaltechAUTHORS:20170328-170602770
Persistent URL:
Official Citation:S. H. Kim, Y. H. Lee, Jingqing Huang and A. Scherer, "Unidirectional vertical emission from photonic crystal nanolasers," 2009 11th International Conference on Transparent Optical Networks, Azores, 2009, pp. 1-4. doi: 10.1109/ICTON.2009.5185121
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75493
Deposited By: Kristin Buxton
Deposited On:29 Mar 2017 01:02
Last Modified:03 Oct 2019 16:51

Repository Staff Only: item control page