𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Edge- and surface-emitting 10.1 μm quantum cascade distributed feedback lasers

✍ Scribed by Daniel Hofstetter; Jérôme Faist; Mattias Beck; Antoine Müller; Ursula Oesterle

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
148 KB
Volume
7
Category
Article
ISSN
1386-9477

No coin nor oath required. For personal study only.

✦ Synopsis

We present measurement results on high-power low-threshold quantum cascade-distributed feedback lasers emitting infrared radiation at 10:16 m. A lateral current injection scheme allowed the use of a strongly coupled surface grating without metal coverage and epitaxial re-growth. Although this design resulted in a simpliÿed processing, the fabrication of high-performance edge-and surface-emitting devices was demonstrated. For the edge-emitting laser, we used a standard ÿrst-order grating with a period of 1:57 m, and for the surface emitter, a second-order grating with a period of 3:15 m was used. Maximal output powers in excess of 200 mW at 85 K and 70 mW at 300 K were achieved for both conÿgurations. The threshold current densities at 85 K (300 K) were 1:85 kA=cm 2 (5:4 kA=cm 2 ) and 2:1 kA=cm 2 (5:6 kA=cm 2 ) for edge and surface emitters, respectively.

📜 SIMILAR VOLUMES

High power second-order distributed feed
High power second-order distributed feedback quantum cascade lasers
✍ Pflügl, C. ;Austerer, M. ;Schrenk, W. ;Golka, S. ;Andrews, A. M. ;Strasser, G. 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 58 KB

## Abstract We present high power mid‐infrared surface‐emitting single mode GaAs‐based quantum cascade lasers (QCLs). By using an air‐AlGaAs waveguide combined with second‐order distributed feedback processing, we obtained optical output, via the surface, above 3W. Surface‐normal dual‐lobe light em

FIR quantum cascade lasers at λ>20 
FIR quantum cascade lasers at λ>20 μm and THz emitters at λ=80 μm
✍ R Colombelli; F Capasso; A Straub; C Gmachl; M.I Blakey; A.M Sergent; D.L Sivco; 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 198 KB

Quantum cascade lasers operating at ¿ 20 m wavelength are reported. Pulsed operation was obtained up to 140 K with a peak power of few milliwatts at cryogenic temperatures. Laser action originates from interminiband transitions in "chirped" superlattice active regions. The waveguides are based on su

Fabrication of 3.9–4.2 μm mid-infra
Fabrication of 3.9–4.2 μm mid-infrared surface emitting PbSe/PbEuTe quantum dot lasers using molecular beam epitaxy
✍ G. Springholz; T. Schwarzl; W. Heiss; T. Fromherz; G. Bauer; M. Aigle; H. Pasche 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 191 KB

The fabrication of 3.9 -4:2 m mid-infrared surface emitting PbSe quantum dot lasers is reported. The self-assembled PbSe quantum dots are produced molecular beam epitaxy of PbSe on 5.4% lattice-mismatched PbEuTe barrier layers. The whole laser structure, grown on (1 1 1) oriented BaF2 substrates, co