Dual-wavelength mode-locking of novel chirped multilayer quantum-dot lasers

Chun-Ping Chiang; Gray Lin; Yu-Chen Chen; Hsu-Chieh Cheng

doi:10.1117/12.2236808

16 September 2016 Dual-wavelength mode-locking of novel chirped multilayer quantum-dot lasers

Chun-Ping Chiang, Gray Lin, Yu-Chen Chen, Hsu-Chieh Cheng

Proceedings Volume 9919, Nanophotonic Materials XIII; 99190K (2016) https://doi.org/10.1117/12.2236808
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

Abstract

Monolithic passively mode-locked lasers are investigated based on chirped multilayer InAs/InGaAs QDs. Three chirped wavelengths, with stacking numbers of 2, 3 and 5 layers, are designed with capped InGaAs thickness of 4, 3 and 1 nm, respectively. The ridge-waveguide devices of 5-μm width and 3-mm length are fabricated to have absorber-to-gain length ratio of 1:9. A curve tracer is used to analyze the hysteresis on the light-current curve. Two kinks in the L-I curve are observed at threshold current near 50 mA and at higher current of about 150 mA. The lasing wavelength just above threshold is centered at 1268 nm and the RF spectrum of mode-locking is peaked at 13.32 GHz. At well above threshold of 200 mA, another RF peak at 13.21 GHz occurs that corresponds to shorter lasing wavelength around 1233 nm. The two lasing wavelengths are originated from ground-state transitions of two groups of InAs/InGaAs QDs. Simultaneous dual-wavelength mode-locking is therefore achieved at rather low forward current and low reverse bias by incorporating this novel design of QD structure.

Conference Presentation

Citation Download Citation

Chun-Ping Chiang, Gray Lin, Yu-Chen Chen, and Hsu-Chieh Cheng "Dual-wavelength mode-locking of novel chirped multilayer quantum-dot lasers", Proc. SPIE 9919, Nanophotonic Materials XIII, 99190K (16 September 2016); https://doi.org/10.1117/12.2236808

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