TITLE

Electrical beam steering of Y-coupled quantum cascade lasers

AUTHOR(S)
Ahn, S. I.; Mujagic, E.; Nobile, M.; Detz, H.; Kalchmair, S.; Andrews, A. M.; Klang, P.; Schrenk, W.; Strasser, G.
PUB. DATE
April 2010
SOURCE
Applied Physics Letters;4/5/2010, Vol. 96 Issue 14, p141113
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The authors describe electrical beam steering of mid-infrared quantum cascade lasers with a monolithically integrated Y-coupled cavity and electrically separated branches. The deflection of the laser beam is achieved without any additional components such as optic or mechanic systems. This is done by injecting additional direct current into one of the two emitting branches, locally increasing the temperature. We estimate that the required temperature difference between left and right branch is approximately 12 K to achieve 2° of the beam steering. This value is in a good agreement with heat transfer simulations.
ACCESSION #
49071211

 

Related Articles

  • Manipulating ultraintense laser pulses in plasmas. Malkin, V. M.; Fisch, N. J. // Physics of Plasmas;Apr2005, Vol. 12 Issue 4, p044507 

    An efficient way for manipulating ultraintense laser pulses in plasmas using resonant three-wave interactions is proposed. Poor quality ultraintense laser pulses can be efficiently transformed into high quality focused laser pulses, while the entropy is taken up by resonant plasma waves. This...

  • Generation of megawatt-power terahertz pulses by noncollinear difference-frequency mixing in GaAs. Tochitsky, S. Ya.; Ralph, J. E.; Sung, C.; Joshi, C. // Journal of Applied Physics;7/15/2005, Vol. 98 Issue 2, p026101 

    Terahertz pulses with a peak power of ∼2 MW were generated in a noncollinear phase-matched GaAs crystal at room temperature. Efficient difference-frequency generation was achieved using 250-ps CO2 laser pulses for which the surface damage threshold increased in comparison with standard...

  • Development of an in situ peak intensity measurement method for ultraintense single shot laser-plasma experiments at the Sandia Z petawatt facility. Link, Anthony; Chowdhury, Enam A.; Morrison, John T.; Ovchinnikov, Vladimir M.; Offermann, Dustin; Van Woerkom, Linn; Freeman, Richard R.; Pasley, John; Shipton, Erik; Beg, Farhat; Rambo, Patrick; Schwarz, Jens; Geissel, Matthias; Edens, Aaron; Porter, John L. // Review of Scientific Instruments;Oct2006, Vol. 77 Issue 10, p10E723 

    Using the physical process of ultraintense field ionization of high charge states of inert gas ions, we have developed a method of peak intensity measurement at the focus of high energy short pulse lasers operating in single shot mode. The technique involves detecting ionization products created...

  • Phase Correlations and Polarization Characteristics of Dye-Solution Laser Radiation. Burov, L. I.; Varaksa, I. N. // Journal of Applied Spectroscopy;Sep2005, Vol. 72 Issue 5, p643 

    The influence of phase correlations of components on the energy and polarization parameters of output radiation have been calculated within the framework of the formalism of polarization components. It is shown that these correlations have a marked effect only on the energy characteristics. At...

  • Efficient terahertz generation from two collinearly propagating CO2 laser pulses. Jiang, Yi; Ding, Yujie J. // Applied Physics Letters;8/27/2007, Vol. 91 Issue 9, p091108 

    Coherent terahertz pulses have been generated at 328.2 μm (914.1 GHz) by frequency-mixing two CO2 laser lines near 10 μm based on collinearly phase-matched difference-frequency generation in GaSe crystals. The highest average output power was measured to be 260 μW, corresponding to a...

  • Investigation of the concentration goodness for some liquid drugs using light angular scattering. Al-Muslet, Nafie A.; Yosif, Rasha I.; Ahmed, Mubarak M. // Indian Journal of Science & Technology;Jun2011, Vol. 4 Issue 6, p632 

    In this work a simple setup was built to measure the angular scattering of laser light as an approach for testing the quality of some pharmaceutical solutions (conc.) and detect any change in that concentration with respect to the standard one suitable for desired dose. A laser diode with...

  • Highly Efficient High-Power Quasi-Continuous Diode Laser Bars for Pumping Solid-State Lasers Based on Yb-Containing Active Media. Katsavets, N. I.; Buchenkov, V. A.; Demidov, D. M.; Leus, R. V.; Iskandarov, M. O.; Nikitichev, A. A.; Ter-Martirosyan, A. L. // Technical Physics Letters;Dec2004, Vol. 30 Issue 12, p1039 

    Highly efficient high-power quasi-continuous diode laser bars (DLBs) emitting in the region of λ = 0.95μm have been developed for pumping solid-state lasers based on Yb-containing active media. The parameters of DLBs and the results of long-term tests are presented. The proposed DLBs are...

  • A small Raman laser based on a KGd(WO4)2 : Nd3+ Crystal (λ=1.538 µm) with passive resonator Q switching. Ustimenko, N.; Zabotin, E.M. // Instruments & Experimental Techniques;Mar/Apr2005, Vol. 48 Issue 2, p239 

    Generation properties of a Raman laser based on a KGd(WO4)2 : Nd3+ crystal and operating in a mode of passive resonator Q switching by a YAG : V3+ crystal at a wavelength safe for human eyes is studied. A small laser with a mass of 35 g, operating over a wide temperature range at a wavelength of...

  • Mechanical strain and defect distributions in GaAs-based diode lasers monitored during operation. Tran Quoc Tien; Tomm, Jens W.; Oudart, Myriam; Nagle, Julien // Applied Physics Letters;3/14/2005, Vol. 86 Issue 11, p111908 

    We monitor the mechanical strain and the defect concentration in AlGaAs–GaAs-based high-power diode laser arrays. This allows studying the interplay between these extrinsic parameters in dependence on device operation. There are two parameters, which contribute to the spread of the...

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