TITLE

Relaxation of packaging-induced strains in AlGaAs-based high-power diode laser arrays

AUTHOR(S)
Tien, Tran Quoc; Gerhardt, Axel; Schwirzke-Schaaf, Sandy; Tomm, Jens W.; Müntz, Holger; Biesenbach, Jens; Oudart, Myriam; Nagle, Julien; Biermann, Mark L.
PUB. DATE
March 2005
SOURCE
Applied Physics Letters;3/7/2005, Vol. 86 Issue 10, p101911
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We monitor the mechanical strain evolution with typical use in the quantum well of AlGaAs/GaAs-based high-power diode laser arrays (cm bars) by spectroscopic means. We show experimentally that pristine devices are essentially uniaxially compressed along the 110-direction with a strain maximum of -0.16% at the center of the device. At the device edges, almost no packaging-induced strain is detectable. After 500 h of continuous wave operation at a current of I=80 A, the strain is reduced by 50%. Furthermore, we observe the growth of a localized region of compressive strain, of hydrostatic symmetry, in one emitter of a particular cm-bar. A compression of about -0.017% is observed, and is most likely caused by point defect accumulation. Our results demonstrate information about absolute strain values and, at least in part, about strain symmetry as well can be obtained by spectroscopic means even within packaged complex optoelectronic devices.
ACCESSION #
16581508

 

Related Articles

  • Strain effect and carrier density in modulation-doped AlxGa1 - xAs/InyGa1 - yAs/GaAs step quantum wells with an embedded potential barrier. Kim, T. W.; Kim, D. Y. // Journal of Materials Science Letters;Dec2003, Vol. 22 Issue 23, p1685 

    The article informs that the strained quantum well structures have been very attractive due to their potential applications in high-speed electronic and opto-electronic devices. Modulation-doped quantum structures are also promising candidates for investigations of fundamental physical...

  • Transient photocurrent overshoot in quantum-well infrared photodetectors. Letov, V.; Ershov, M.; Matsik, S. G.; Perera, A. G. U.; Liu, H. C.; Wasilewski, Z. R.; Buchanan, M. // Applied Physics Letters;9/24/2001, Vol. 79 Issue 13 

    We report a strongly nonexponential behavior of the transient photocurrent in quantum-well infrared photodetectors (QWIPs) in response to a step-like infrared illumination. The transient photocurrent displays an overshoot on the time scale 0.1–1 ms at low temperatures (T<70 K), exceeding...

  • The Synthesis and Photoelectric Properties of Si–(Si2)1 – x(ZnS)x Epitaxial Structures. Sapaev, B.; Saidov, A. S. // Technical Physics Letters;Sep2004, Vol. 30 Issue 9, p715 

    Epitaxial layers of (Si2)1 - x(ZnS)x(0.08????x????0.92) solid solutions were grown by liquid phase epitaxy from a tin-based solution melt confined between two horizontal polycrystalline silicon substrates. The morphology, photoelectric properties, and current-voltage characteristics of the...

  • O/E Component Testing Pitfalls. Shores, Michael C. // Circuits Assembly;Jul2005, Vol. 16 Issue 7, p44 

    This article discusses the setbacks of optoelectronics component testing. Compared to electronics, optoelectronics technology in telecommunication is still evolving and at a stage similar to the Optical Vacuum Tube Era. The transmission speed for optical communications rose from 52...

  • Winner-Take-All Neural Network with Massively Optoelectronic Interconnections. Ali, Wissam H.; Abdalla, Ahmed N.; Ali, Wa'l H. // American Journal of Applied Sciences;2008, Vol. 6 Issue 2, p268 

    The increased interconnection density, bandwidth, nonlocality and fan-out-fan-in offered by optics over conventional electronic technologies make it a very attractive medium for a variety of application particularity in the field of communication system implementation for all types of computing...

  • NO SMOKE AND MIRRORS.  // Industrial Laser Solutions;Nov2006, Vol. 21 Issue 11, p6 

    The article offers anecdote about three Southerners who came to check on panel benders at the Salvagnini America Inc. booth. The booth has no panel bender but lasers. The men at the booth offered the Southerners to run parts on the closest materials and programs to operate the laser with no...

  • An optoelectronic system for automatic inspection of the external view of fuel pellets. Finogenov, L.; Beloborodov, A.; Ladygin, V.; Chugui, Yu.; Zagoruiko, N.; Gulyaevskii, S.; Shul’man, Yu.; Lavrenyuk, P.; Pimenov, Yu. // Russian Journal of Nondestructive Testing;Oct2007, Vol. 43 Issue 10, p692 

    Results of the development and testing of a system for automatic inspection of the external view of fuel pellets for fuel elements of reactors of nuclear power plants are presented. The system operates on the basis of the optoelectronic method for producing high-contrast images of the pellet...

  • New materials expand capabilities of solid-state lasers. Hecht, Jeff // Laser Focus World;Feb2009, Vol. 45 Issue 2, p50 

    The article discusses the significance of ceramic hosts, transition-metal doping of II-VI hosts and optically pumped semiconductor lasers in the expansion of solid-state laser capabilities to new wavelengths and higher powers. The ceramic lasers can be produced through conventional...

  • Bragg grating in KTP stabilizes seed laser.  // Laser Focus World;Jul2005, Vol. 41 Issue 7, p13 

    Reports on the development of a lightweight and energy-efficient seed laser by engineers at AdvR in Bozeman, Montana. Ability of the laser to seed high-power solid-state lasers to eliminate fluctuations in intensity under high-power operation; Statement of AdvR vice president of technology...

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