Accession Number:

ADA595851

Title:

Widely Tunable Distributed-Feedback Lasers with Chirped Gratings

Descriptive Note:

Journal article

Corporate Author:

NEW MEXICO UNIV ALBUQUERQUE CENTER FOR HIGH TECHNOLOGY MATERIALS

Personal Author(s):

Report Date:

2009-04-20

Pagination or Media Count:

4.0

Abstract:

A quasicontinuous tuning range of 65 nm at 3.2 microns was obtained for continuous wave, single-longitudinal-mode operation at 77 K of an optically pumped distributed-feedback laser with a chirped grating. Interferometric lithography with spherical wavefronts was used to fabricate a large-area chirped grating whose period varied continuously in the direction of the grating lines. Tuning was achieved by translating the optical pump stripe relative to the device to activate regions with different grating periods. Methane absorption spectra, obtained using this tunable distributed-feedback laser, closely match the high-resolution transmission molecular absorption database simulations.

Subject Categories:

  • Lasers and Masers
  • Atomic and Molecular Physics and Spectroscopy
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE