High-Temperature Continuous-Wave Single-Mode Operation of 1.3-$\mu$m p-Doped InAs–GaAs Quantum-Dot VCSELs

2009 ◽  
Vol 21 (17) ◽  
pp. 1211-1213 ◽  
Author(s):  
D.W. Xu ◽  
S.F. Yoon ◽  
C.Z. Tong ◽  
L.J. Zhao ◽  
Y. Ding ◽  
...  
2008 ◽  
Vol 92 (18) ◽  
pp. 183508 ◽  
Author(s):  
T. Lehnhardt ◽  
M. Hümmer ◽  
K. Rößner ◽  
M. Müller ◽  
S. Höfling ◽  
...  

Author(s):  
Mohammed S. Al-Ghamdi ◽  
Ahmed Bakry ◽  
Moustafa Ahmed

Abstract We report on achieving tuned single mode operation of a multimode semiconductor laser by coupling it to a very-short external cavity with selective feedback. We show that the induced uniform feedback light from the very-short external cavity can induce single-mode oscillation over a broad range of optical feedback. Then by applying selective external to the optimum settings of the single-mode oscillation, we predict tuning of the single-mode output over a wavelength range of ~ 20 nm by detuning the peak wavelength of optical feedback from the central wavelength of the modal gain. The study is based on modeling of the dynamics of multimode semiconductor laser subject to selective optical feedback. The model takes into account mechanisms of both self- and cross-modal gain suppression, and the study is concerned with the very-short external cavity that corresponds to stable continuous-wave (CW) operation.


2004 ◽  
Vol 03 (01n02) ◽  
pp. 187-192
Author(s):  
G. LIN ◽  
I. F. CHEN ◽  
F. J. LAY ◽  
J. Y. CHI ◽  
D. A. LIVSHITS ◽  
...  

We have investigated light-current and spectral characteristics of 2-, 5- and 10-stack InAs / InGaAs / GaAs quantum dot (QD) ridge-waveguide lasers grown by MBE. Ultra-low threshold current of 1.43 mA was achieved for 2-stack QD laser. Simultaneous lasing at ground- and excited-states was observed. This effect is accounted for the finite time of carriers capture to the ground-state in QDs. Multi-stack QD structures enables to maintain continuous-wave (CW) ground-state lasing up to the current density of 100×Jth and to achieve the highest output power and efficiency ever recorded for any single-mode lasers of 1.3-μm-wavelength range.


2019 ◽  
Vol 27 (3) ◽  
pp. 2681 ◽  
Author(s):  
Jinkwan Kwoen ◽  
Bongyong Jang ◽  
Katsuyuki Watanabe ◽  
Yasuhiko Arakawa

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