TITLE

Analysis of thermal images from diode lasers: Temperature profiling and reliability screening

AUTHOR(S)
Kozlowska, Anna; Latoszek, Mateusz; Tomm, Jens W.; Weik, Fritz; Elsaesser, Thomas; Zbroszczyk, Mariusz; Bugajski, Maciej; Spellenberg, B.; Bassler, M.
PUB. DATE
May 2005
SOURCE
Applied Physics Letters;5/16/2005, Vol. 86 Issue 20, p203503
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Imaging thermography in the 3–5 μm wavelength range is applied to the analysis of thermal properties of high-power diode lasers. We investigate these devices by inspecting their front facets as well as their active regions along the resonator. The latter is done through top windows within the substrate. Raw data are found to be mostly interfered by thermal radiation traveling through the substrate, which is transparent for infrared light. Substracting this contribution and recalibration allows for obtaining realistic temperature profiles along laser structures. Facet heating is analyzed complementary by micro-Raman spectroscopy. We show how hot spots at the front facet, in the substrate, or even in the active region within the substrate are discovered. Our approach paves the way for an advanced methodology of device screening.
ACCESSION #
17164876

 

Related Articles

  • Thermal properties and degradation behavior of red-emitting high-power diode lasers. Tran Quoc Tien; Weik, Fritz; Tomm, Jens W.; Sumpf, Bernd; Zorn, Martin; Zeimer, Ute; Erbert, Götz // Applied Physics Letters;10/30/2006, Vol. 89 Issue 18, p181112 

    The thermal properties and the degradation behavior of high-power broad-area diode lasers emitting at 650 nm are analyzed. Imaging thermography is applied to assess the bulk temperature while the facet temperature is measured by micro-Raman spectroscopy. Although no visible facet alteration is...

  • IMAGING CRACKS BY LASER EXCITED THERMOGRAPHY. Schlichting, J.; Kervalishvili, G. N.; Maierhofer, Ch.; Kreutzbruck, M. // AIP Conference Proceedings;2/22/2010, Vol. 1211 Issue 1, p727 

    During the last years active thermography is increasingly used in a number of NDT problems in production and maintenance. In this work we focus on the detection of vertical cracks starting at the surface, which is an important indication of structural failure. By using local thermal excitation...

  • High-resolution differential thermography of integrated circuits with optical feedback laser scanning microscopy. Blanca, Carlo Mar; Cemine, Vernon Julius; Sastine, Vera Marie; Saloma, Caesar // Applied Physics Letters;12/5/2005, Vol. 87 Issue 23, p231104 

    We demonstrate a noninvasive technique for generating differential thermal maps of semiconductor edifices in integrated circuits (IC) at diffraction-limited resolution. An inexpensive optical feedback laser-scanning microscope detects changes in the optical beam-induced currents (OBIC) that are...

  • Experimental study of subsonic flows by liquid‐crystal thermogfraphy. Zharkova, G. M.; Kovrizhina, V. N.; Khachaturyan, V. M. // Journal of Applied Mechanics & Technical Physics;Mar/Apr2002, Vol. 43 Issue 2, p274 

    The physical basis of liquid‐crystal thermography, which allows visualization and measurement of temperature and heat‐flux fields, are expounded. An experimental technique and methods of obtaining quantitative results are described. Two approaches (monochromatic and chromatic) to...

  • Cool façades. Thermal performance assessment using infrared thermography. MATIAS, Luís; GONÇALVES, Luís; COSTA, Alexandra; Pina SANTOS, Carlos Pina Carlos // Key Engineering Materials;2014, Vol. 634, p14 

    High reflective paints (cool paints) can reduce solar heat gains, improving thermal comfort and energy efficiency in buildings in summer period. To evaluate the thermal performance of different reflective paints applied in façades (over ETICS like solution) a research study is being developed...

  • Thermographic calorimetry of the neutral beam injectors heating beams at TJ-II. Fuentes, C.; Liniers, M.; Guasp, J.; Doncel, J.; Botija, J.; Wolfers, G.; Alonso, J.; Acedo, M.; Sánchez, E.; Marcon, G.; Weber, M.; Carrasco, R.; Sarasola, X.; Zurro, B.; Tera, J. // Review of Scientific Instruments;Oct2006, Vol. 77 Issue 10, p10E519 

    A new beam diagnostic based on infrared thermography has been developed for the neutral beam injectors of the stellarator TJ-II. A highly anisotropic movable target intercepts the beam at its entrance into the stellarator. The thermal print of the beam is captured with a high resolution infrared...

  • Computer-assisted skin videothermography is a highly sensitive quality tool in the diagnosis and monitoring of complex regional pain syndrome type I. Huygen, Frank J. P. M.; Niehof, Sjoerd; Klein, Jan; Zijlstra, Freek J. // European Journal of Applied Physiology;May2004, Vol. 91 Issue 5/6, p516 

    The use of thermography in the diagnosis and evaluation of complex regional pain syndrome type 1 (CRPS1) is based on the presence of temperature asymmetries between the involved area of the extremity and the corresponding area of the uninvolved extremity. The interpretation of thermographic...

  • Laser irradiation and its effects on heat transfer in heat assisted magnetic recording. Shengbin Hu; Baoxi Xu // Review of Scientific Instruments;Mar2006, Vol. 77 Issue 3, p034703 

    Heat assisted magnetic recording is proposed to be a candidate to overcome superparamagnet effect and support terabit/in.2 recording. However, laser heating technique induces serious challenges to build a reliable and stable head-disk interface. One of them is how to measure the temperature in...

  • Improving the Reliability of process Heaters with Infrared Thermography. Ghoshal, Sanjib // Process Heating;Jun2009, Vol. 16 Issue 6, p22 

    The article offers suggestions on improving the reliability and efficiency of process heaters with infrared thermography. Infrared thermography can be used for condition monitoring of fired heaters in a range of applications. The overall temperature profile of the heater tubes can be monitored...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics