Short-Wavelength (λ ≈ 3.6 μm) In0.73Ga0.27As-AlAs-InP Quantum-Cascade Laser

We describe the design and implementation of a short-wavelength quantum-cascade laser emitting in the range of 3.6-3.7 mum at 77 K and in the range of 3.8-3.9 mum at 300 K. The shortest wavelength laser emission observed at 77 K is lambda=3.62 mum. The active region is based on the strain-compensate...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of quantum electronics 2007, Vol.43 (1), p.42-46
Main Authors: SEMTSIV, Mykhaylo P, DRESSIER, Sebastian, TED MASSELINK, William
Format: Article
Language:English
Subjects:
Cascades
Density
Emission
Emittance
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Lasers
Optics
Physics
Quantum electronics
Semiconductor lasers
laser diodes
Threshold currents
Wavelengths
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We describe the design and implementation of a short-wavelength quantum-cascade laser emitting in the range of 3.6-3.7 mum at 77 K and in the range of 3.8-3.9 mum at 300 K. The shortest wavelength laser emission observed at 77 K is lambda=3.62 mum. The active region is based on the strain-compensated In sub(0.73)Ga sub(0.27)As-AlAs heterosystem on InP. The laser operates in pulsed mode up to 300 K, and in continuous-wave mode at 77 K. Laser threshold current densities are as low as 600 A/cm super(2) at 10 K, 800 A/cm super(2) at 77 K, and 3.8 kA/cm super(2) at 300 K in pulsed mode. The temperature coefficient T sub(0) is as high as 143 K. Driven with 50% duty cycle at 77 K, lasers deliver up to 70 mW average power per facet and the differential quantum efficiency is as high as 14% per cascade
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2006.884577