88 °C, continuous-wave operation of apertured, intracavity contacted, 1.55 μm vertical-cavity surface-emitting lasers

Nakagawa, S.; Hall, E.; Almuneau, G.; Kim, J. K.; Buell, D. A.; Kroemer, H.; Coldren, L. A.
March 2001
Applied Physics Letters;3/5/2001, Vol. 78 Issue 10, p1337
Academic Journal
We demonstrate a lattice-matched 1.55 μm vertical-cavity surface-emitting laser operating continuous wave up to 88 °C. The laser employs AlAsSb-based mirrors, which provide high reflectivity and lattice matching to InP. The poor electrical and thermal conductivity of these mirrors is circumvented by utilizing an InP double-intracavity contacted structure. Benefits of the intracavity contacts are addressed by comparing the characteristics with the alternative contact scheme where current is injected through the Sb-based mirrors. Current and optical confinement is provided by an undercut aperture. The device shows a threshold current of 800 μA, a differential efficiency of 23%, and a maximum output power of over 1 mW at 20 °C. © 2001 American Institute of Physics.


Related Articles

  • Radar, Part 8--Synthetic-Aperture Radars. Adamy, Dave // Journal of Electronic Defense;Dec2000, Vol. 23 Issue 12, p66 

    Part VIII. Features the synthetic-aperture radar. Range resolution; Azimuth resolution; Focused-array SAR.

  • Alternating-aperture masks ready for dense patterns. Ebihara, Takeaki; Morikawa, Yasutaka // Solid State Technology;Dec2003, Vol. 46 Issue 12, p28 

    Features alternating-aperture phase-shifting masks (Alt-PSM) that rely on the fact that photoresists are insensitive to the phase of the light exposing them. Use of Alt-PSM to pattern relatively isolated narrow gates on microprocessor and ASIC chips; Key features and specifications;...

  • Summary Report. Thiessen, Henry A. // AIP Conference Proceedings;2002, Vol. 642 Issue 1, p139 

    We discuss here the status of dynamic aperture calculations for the various machines discussed at this workshop. We recommend that these calculations be extended to include all magnet field errors and alignment errors as quickly as possible.

  • Rotating radar gives helicopters new vision.  // Electronic Design;11/6/95, Vol. 43 Issue 23, p30 

    Informs about the development a novel synthetic-aperture radar (SAR) system that allows pilots to land in near-zero visibility conditions. Enlargement of the radar's viewing area; Processing of the radar system by developed algorithms; Operation of the system.

  • Space-borne radar will revolutionize hazard watching. P.McG. // Electronic Design;03/03/97, Vol. 45 Issue 5, p28 

    Reports on the invention of the synthetic aperture radar (SAR) interferometry that uses radar pictures taken from 500 miles or more up in space to track tiny movements in the surface of the Earth. SAR's use to map the surface of the planet Venus; SAR's capability to circle the earth, mapping...

  • Synthetic Aperture Radar as a Tool for Investigating Polar Mesoscale Cyclones. Sikora, Todd D.; Friedman, Karen S.; Pichel, William G.; Clemente-Colon, Pablo // Weather & Forecasting;Dec2000, Vol. 15 Issue 6, p745 

    Polar mesoscale cyclones are intense vortices that form in cold, marine air masses poleward of major jet streams and frontal zones. Synthetic aperture radar (SAR) should be considered as a potential tool for the study of polar mesoscale cyclones because of its ability to remotely sense, at...

  • SAR poised to assume center stage in U.S. reconnaissance. McAuliffe, Amy // Military & Aerospace Electronics;Feb96, Vol. 7 Issue 2, p10 

    Analyzes synthetic aperture radar (SAR) technology. List of SAR-equipped fighter planes; Benefits; Setbacks; Role of commercial-off-the-shelf (COTS) technology; Product features and capabilities of ASARS 2; Planned future enhancements. INSETS: Real-time software: Just what SAR ordered, by...

  • Ultra-wideband radar detects buried mines. Nordwall, Bruce D. // Aviation Week & Space Technology;3/31/1997, Vol. 146 Issue 13, p63 

    Focuses on US Army tests using a unique ultra-wideband (UWB) synthetic aperture radar (SAR). Purpose of the tests being to gather data for the design of future ground and foliage penetration radars; Capabilities of a UWB SAR; Results of some of the testing showing lower-frequency energy...

  • Spotting salinity from space. Luntz, Stephen // Australasian Science;Jun2000, Vol. 21 Issue 5, p8 

    Deals with the method introduced by David Bruce of the University of South Australia for spotting dryland salinity in Australia. When salinity occurs; How the method works; Importance of Synthetic Aperture Radar to the method.


Read the Article


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

Try another library?
Sign out of this library

Other Topics