TITLE

High-peak-power strain-compensated GaInAs/AlInAs quantum cascade lasers (λ∼4.6 μm) based on a slightly diagonal active region design

AUTHOR(S)
Yang, Q.; Lösch, R.; Bronner, W.; Hugger, S.; Fuchs, F.; Aidam, R.; Wagner, J.
PUB. DATE
December 2008
SOURCE
Applied Physics Letters;12/22/2008, Vol. 93 Issue 25, p251110
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Employing a “slightly diagonal” active region design for the quantum cascade lasers compared to a reference sample based on the conventional vertical transition design [R. Köhler et al., Appl. Phys. Lett. 76, 1092 (2000)], we have improved the maximum operation temperature, room-temperature maximum peak power per facet, and room-temperature slope efficiency from 320 K, 200 mW, and 570 mW/A to higher than 360 K, 3.2 W, and 2200 mW/A, respectively, for the device size of 16 μm×3 mm with as-cleaved facets operated in pulsed mode.
ACCESSION #
36197964

 

Related Articles

  • Ultrafast physics: Quantum control with a twist. Silberberg, Yaron // Nature;8/5/2004, Vol. 430 Issue 7000, p624 

    Examines the limitations experienced by laser scientists when trying to drive quantum systems, such as atoms or molecules, into desired states. Ability of the linearly polarized laser pulses currently in use to drive the system along one axis only; Requirement of more complex light signals if...

  • Role of interface roughness in the transport and lasing characteristics of quantum-cascade lasers. Khurgin, Jacob B.; Dikmelik, Yamac; Liu, Peter Q.; Hoffman, Anthony J.; Escarra, Matthew D.; Franz, Kale J.; Gmachl, Claire F. // Applied Physics Letters;3/2/2009, Vol. 94 Issue 9, pN.PAG 

    A density-matrix based theory of transport and lasing in quantum-cascade lasers reveals that large disparity between luminescent linewidth and broadening of the tunneling transition changes the design guidelines to favor strong coupling between injector and upper laser level. This conclusion is...

  • Detuning characteristics of the linewidth enhancement factor of a midinfrared quantum cascade laser. Kumazaki, Naoki; Takagi, Yohei; Ishihara, Mikito; Kasahara, Kenichi; Sugiyama, Atsushi; Akikusa, Naota; Edamura, Tadataka // Applied Physics Letters;3/24/2008, Vol. 92 Issue 12, p121104 

    The linewidth enhancement factor of a 5 μm distributed feedback (DFB) quantum cascade laser above the threshold current detuned from the gain peak was investigated. This laser oscillates in two DFB modes located on either side of the gain peak. Using the optical feedback self-mixing method,...

  • High-power diode-pumped Tm:YLF slab laser. Schellhorn, M.; Ngcobo, S.; Bollig, C. // Applied Physics B: Lasers & Optics;Feb2009, Vol. 94 Issue 2, p195 

    A 2% Tm3+-doped LiYF4(Tm:YLF) slab is double-end-pumped by two laser diode stacks. The pumped volume has a rectangular cross section. The Tm:YLF laser produced 148 W of continuos-wave output at 1912 nm in a beam with M ≈199 and M ≈1.7 for 554 W of incident pump power. The slope...

  • Cavity enhanced absorption spectroscopy measurements of pressure-induced broadening and shift coefficients in the Ï… 1+ Ï… 3 combination band of ammonia. Bell, C.L.; Dhib, M.; Hancock, G.; Ritchie, G.A.D.; van Helden, J.H.; van Leeuwen, N.J. // Applied Physics B: Lasers & Optics;Feb2009, Vol. 94 Issue 2, p327 

    Cavity enhanced absorption spectroscopy is performed using an external cavity diode laser operating around 1516 nm. We demonstrate a sensitivity of 6×10−8 cm−1 Hz−1/2 and utilise a simple method to measure pressure-induced broadening and shift coefficients. The broadening...

  • Spiral-shaped microcavity laser: a new class of semiconductor laser. Kneissl, Michael; Teepe, Mark; Miyashita, Naoko; Chern, Grace D.; Chang, Richard K.; Johnson, Noble M. // AIP Conference Proceedings;2005, Vol. 772 Issue 1, p1517 

    A spiral-shaped microcavity structure is used to achieve uni-direcitonal laser emission from a microresonator. This was previously demonstrated with an InGaN MQW microdisk laser emitting near 400 nm and is demonstrated here with room-temperature laser operation of an AlGaAs heterostructure with...

  • Target practice. Hibbert, Lee // Professional Engineering;2/22/2006, Vol. 19 Issue 4, p25 

    The article reports on the multi-million-pound Orion laser project which aims to unlock some of the secrets of plasma physics. To maintain the nuclear warheads of Great Britain, research into laser plasma physics is important. Neodymium-doped glass as active lasing medium will be used by Orion....

  • Synthesis of efficient ZnO-based random lasing medium using laser-induced air breakdown processing. Kabashin, A. V.; Trudeau, A.; Marine, W.; Meunier, M. // Applied Physics Letters;11/12/2007, Vol. 91 Issue 20, p201101 

    A simple local patterning laser-assisted method to transform bulk metallic Zn into a highly efficient ZnO-based random lasing medium is reported. The method uses the plasma of CO2 laser-induced air breakdown to treat the surface of a Zn target and thus transform it into a porous, nanostructured...

  • Optical characterization of a vertical cavity surface emitting laser for a coherent population trapping frequency reference. Long, Christopher M.; Choquette, Kent D. // Journal of Applied Physics;Feb2008, Vol. 103 Issue 3, p033101 

    Characterization of a vertical cavity surface emitting laser source for a frequency reference that uses coherent population trapping with atomic rubidium is reported. The frequency reference requires a low-noise laser that operates in a single transverse mode at 794.7 nm. We show that biasing...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics