Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
Journal Home About Issues in Progress Current Issue All Issues Feature Issues

Room temperature continuous-wave lasing in photonic crystal nanocavity

Masahiro Nomura, Satoshi Iwamoto, Katsuyuki Watanabe, Naoto Kumagai, Yoshiaki Nakata, Satomi Ishida, and Yasuhiko Arakawa

Open Access Open Access

Abstract

We demonstrate room temperature continuous-wave laser operation at 1.3 µm in a photonic crystal nanocavity with InAs/GaAs self-assembled quantum dots by optical pumping. By analyzing a coupled rate equation and the experimental light-light characteristic plot, we evaluate the spontaneous emission coupling factor of the laser to be ~0.22. Three-dimensional carrier confinement and a low transparent carrier density due to volume effect in a quantum dot system play important roles in the cw laser operation at room temperature as well as a high quality factor photonic crystal nanocavity.

©2006 Optical Society of America

Full Article  |  PDF Article
More Like This
Room temperature continuous wave operation of InAs/GaAs quantum dot photonic crystal nanocavity laser on silicon substrate

Katsuaki Tanabe, Masahiro Nomura, Denis Guimard, Satoshi Iwamoto, and Yasuhiko Arakawa
Opt. Express 17(9) 7036-7042 (2009)

Room temperature continuous wave operation in a photonic crystal microcavity laser with a single layer of InAs/InP self-assembled quantum wires

Luis Javier Martínez, Benito Alén, Ivan Prieto, David Fuster, Luisa González, Yolanda González, María Luisa Dotor, and Pablo Aitor Postigo
Opt. Express 17(17) 14993-15000 (2009)

Quality factor control and lasing characteristics of InAs/InGaAs quantum dots embedded in photonic-crystal nanocavities

T. Tawara, H. Kamada, Y. -H. Zhang, T. Tanabe, N. I. Cade, D. Ding, S. R. Johnson, H. Gotoh, E. Kuramochi, M. Notomi, and T. Sogawa
Opt. Express 16(8) 5199-5205 (2008)

View More...

Cited By

Optica participates in Crossref's Cited-By Linking service. Citing articles from Optica Publishing Group journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (5)
Fig. 1.
Fig. 1. (a) Scanning electron micrograph of a cross section of a two-dimensional PhC structure. (b) Top view of the L3 defect nanocavity. The first and third nearest air holes at both ends of the cavity are shifted outwards by 0.15a as shown by white arrows.

Download Full Size | PDF

Fig. 2.
Fig. 2. Lasing spectrum with cw excitation light with an excitation power of 40 µW measured at room temperature.

Download Full Size | PDF

Fig. 3.
Fig. 3. Output power of the lasing mode as a function of excitation power. The lateral axis is average excitation power (10% duty cycle, 100 µs quasi cw excitation). Red line is the linear fit for the experimental plot above the threshold.

Download Full Size | PDF

Fig. 4.
Fig. 4. PL spectra around the cavity mode measured at various excitation powers. The figures in the inset are the average excitation powers (10% duty cycle, 100 µs quasi cw excitation) in units of µW. The vertical axis is on a logarithmic scale.

Download Full Size | PDF

Fig. 5.
Fig. 5. (a) Linewidth of the lasing mode. The broken green line: resolution limit of the detection system. (b) Output power of the lasing mode. The lateral axis is the average excitation power (10% duty cycle, 100 µs quasi cw excitation). The green curve is the fitting curve by a coupled rate equation analysis.

Download Full Size | PDF

Equations (2)

Equations on this page are rendered with MathJax. Learn more.

d N d t = R ex − N τ r − N τ nr − c n eff . Γ g ( N ) P ,
d P d t = c n eff . Γ g ( N ) P + β N τ r − P τ p .
Select as filters
Select Topics Cancel
Top
       
© Copyright 2024 | Optica Publishing Group. All rights reserved, including rights for text and data mining and training of artificial technologies or similar technologies.
Privacy | Terms of Use