Cart (Loading....) | Create Account
Close category search window
 

Quantum interference control of electrical currents in GaAs

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Hache, A. ; Dept. of Phys., Toronto Univ., Ont., Canada ; Sipe, J.E. ; van Driel, H.M.

In an earlier publication, preliminary observations of the generation of electrical currents were reported in GaAs and low-temperature-grown GaAs (LT-GaAs) at 295 K using quantum interference control of single- and two-photon band-band absorption of 1.55- and 0.775-μm ultrashort optical pulses. Time-integrated currents were measured via charge collection in a metal-semiconductor-metal (MSM) electrode structure. Here we present detailed characteristics of this novel effect in terms of a simple circuit model for the MSM device and show how the injected current depends on MSM parameters as well as optical coherence, power, and polarization. For picosecond pulse excitation with peak irradiance of only 30 MW/cm-2 (1.55 μm) and 9 kW/cm-2 (0.775 μm), peak current densities of ~10 A/cm-2 at peak carrier densities of 1015 cm -3 are inferred from the steady-state signals. This compares with 50 A/cm-2 predicted theoretically; the discrepancy mainly reflects inefficient charge collection at the MSM electrodes

Published in:

Quantum Electronics, IEEE Journal of  (Volume:34 ,  Issue: 7 )

Date of Publication:

Jul 1998

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.