W
W.D. Herzog
Researcher at Boston University
Publications - 16
Citations - 268
W.D. Herzog is an academic researcher from Boston University. The author has contributed to research in topics: Laser & Near-field scanning optical microscope. The author has an hindex of 7, co-authored 16 publications receiving 262 citations.
Papers
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Time-resolved photoluminescence studies of free and donor-bound exciton in GaN grown by hydride vapor phase epitaxy
TL;DR: In this article, the radiative recombination of free and donor-bound excitons in unintentionally doped GaN grown by hydride vapor phase epitaxy was studied using time-resolved photoluminescence (PL) spectroscopy.
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Beam divergence and waist measurements of laser diodes by near-field scanning optical microscopy
TL;DR: In this paper, the authors demonstrate the use of near-field scanning optical microscopy (NSOM) for the measurement of the beam properties of single quantum well, graded index separate confinement heterojunction ridge laser diodes.
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Near-field optical beam induced current measurements on heterostructures
TL;DR: In this paper, near-field optical beam induced current (NOBIC) measurements on semiconductor quantum well (QW) structures were performed using a subwavelength fiber tip coupled with a tunable laser source and scanned over a sample surface.
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Near-field optical studies of semiconductor heterostructures and laser diodes
TL;DR: In this paper, the intrinsic resolution limitations of near-field photoconductivity in quantum-well heterostructures and demonstrate that the resolution depends strongly on the amount of evanescent and propagating field components in the semiconductor.
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Beam steering in narrow-stripe high-power 980-nm laser diodes
TL;DR: In this article, the authors measured the optical beam characteristics of weakly-guided narrow-stripe high-power laser diodes using near-field scanning optical microscopy and showed that frequency-locking of lateral modes exists for operating currents below the kink in the L-I curve, which is a result of a shift of the beat-length pattern inside the laser cavity of the frequency-locked lateral modes.