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Intrinsic polarization control in rectangular GaN nanowire lasers

Journal Article · · Nanoscale
DOI:https://doi.org/10.1039/C5NR07504A· OSTI ID:1240100
 [1];  [2];  [2];  [2];  [2];  [1];  [2]
  1. Univ. of New Mexico, Albuquerque, NM (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

In this study, we demonstrate intrinsic, linearly polarized lasing from single GaN nanowires using cross-sectional shape control. A two-step top-down fabrication approach was employed to create straight nanowires with controllable rectangular cross-sections. A clear lasing threshold of 444kW/cm2 and a narrow spectral line width of 0.16 nm were observed under optical pumping at room temperature, indicating the onset of lasing. The polarization was along the short dimension (y-direction) of the nanowire due to the higher transverse confinement factors for y-polarized transverse modes resulting from the rectangular nanowire cross-section. The results show that cross-sectioned shape control can enable inherent control over the polarization of nanowire lasers without additional environment requirements, such as placement onto lossy substrates.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1240100
Alternate ID(s):
OSTI ID: 1370398
OSTI ID: 1371177
OSTI ID: 1387429
Report Number(s):
SAND2016-1212J; 619290
Journal Information:
Nanoscale, Journal Name: Nanoscale Journal Issue: 10 Vol. 8; ISSN NANOHL; ISSN 2040-3364
Country of Publication:
United States
Language:
English

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Cited By (9)

Periodically Aligned Dye Molecules Integrated in a Single MOF Microcrystal Exhibit Single-Mode Linearly Polarized Lasing journal April 2017
Strong Exciton-Photon Coupling in Hybrid Inorganic-Organic Perovskite Micro/Nanowires journal December 2017
Anapole nanolasers for mode-locking and ultrafast pulse generation journal May 2017
Catalyst shape engineering for anisotropic cross-sectioned nanowire growth journal January 2017
Dual wavelength lasing of InGaN/GaN axial-heterostructure nanorod lasers journal January 2019
Horizontal GaN nanowires grown on Si (111) substrate: the effect of catalyst migration and coalescence journal November 2018
Near- and mid-infrared intersubband absorption in top-down GaN/AlN nano- and micro-pillars journal November 2018
Toward ultimate efficiency: progress and prospects on planar and 3D nanostructured nonpolar and semipolar InGaN light-emitting diodes journal January 2018
Near- and mid-infrared intersubband absorption in top-down GaN/AlN nano- and micropillars text January 2018

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