Novel chirped multilayer quantum-dot lasers

G. Lin; C. Y. Chang; W. C. Tseng; C. P. Lee; K. F. Lin; R. Xuan; J. Y. Chi

doi:10.1117/12.781955

8 May 2008 Novel chirped multilayer quantum-dot lasers

G. Lin, C. Y. Chang, W. C. Tseng, C. P. Lee, K. F. Lin, R. Xuan, J. Y. Chi

Proceedings Volume 6997, Semiconductor Lasers and Laser Dynamics III; 69970R (2008) https://doi.org/10.1117/12.781955
Event: SPIE Photonics Europe, 2008, Strasbourg, France

Abstract

Chirped multilayer (N=10) QD lasers with 2-, 3- and 5-layer of longer-, medium-, and shorter-wavelength QD stacks, respectively, were grown in this work. Low threshold current density and high saturated modal gain were achieved in this specially designed QD structure. Empirical gain-current analysis was performed on this chirped multilayer QD structure for the first time. It was consistent with our spectral observations and provided valuable information on carrier recombination in chirped multilayer QD structure. Two novel spectral characteristics were discovered also for the first time. First, simultaneous two-wavelength lasing around threshold was observed under particular gain-loss condition at this specific multilayer structure of QD stacking numbers. Second, at cryogenic temperature, simultaneous two-wavelength lasing emissions switched from longer-wavelength lasing first to shorter-wavelength lasing first with increasing current injection. Non-uniform carrier distribution among chirped multilayer QD structure is evident at low temperature below 200 K from our analysis.

Citation Download Citation

G. Lin, C. Y. Chang, W. C. Tseng, C. P. Lee, K. F. Lin, R. Xuan, and J. Y. Chi "Novel chirped multilayer quantum-dot lasers", Proc. SPIE 6997, Semiconductor Lasers and Laser Dynamics III, 69970R (8 May 2008); https://doi.org/10.1117/12.781955

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available