OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 19, Iss. 12 — Dec. 2, 2002
  • pp: 2893–2903

Spectroscopic characterization of Nd:Y2O3: application toward a differential absorption lidar system for remote sensing of ozone

Brian M. Walsh, John M. McMahon, William C. Edwards, Norman P. Barnes, Randy W. Equall, and Ralph L. Hutcheson  »View Author Affiliations


JOSA B, Vol. 19, Issue 12, pp. 2893-2903 (2002)
http://dx.doi.org/10.1364/JOSAB.19.002893


View Full Text Article

Acrobat PDF (221 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Neodymium-doped yttria (Nd:Y<sub>2</sub>O<sub>3</sub>) is investigated as a solid-state laser material for frequency-tripled generation of ultraviolet laser wavelengths for use in remote sensing of ozone. Emphasis is placed both on the spectroscopy of the fundamental wavelengths at ∼0.914 μm and ∼0.946 μm to assess their feasibility for laser oscillation and on the absorption spectroscopy in the 0.8-μm wavelength region for determination of suitable pump sources. The temperature dependence of the emission and absorption characteristics of Nd:Y<sub>2</sub>O<sub>3</sub> are examined, since aggressive cooling may be required for efficient ∼0.914-μm lasing due to its quasi four-level nature. Data for flash-lamp-pumped laser performance on the <sup>4</sup>F<sub>3/2</sub>→<sup>4</sup>I<sub>11/2</sub> is presented for Nd:Y<sub>2</sub>O<sub>3</sub> and compared with Nd:YAG. Diode-pumped threshold-fluence and threshold-pump energy estimates for Nd:Y<sub>2</sub>O<sub>3</sub> lasing on the <sup>4</sup>F<sub>3/2</sub>→<sup>4</sup>I<sub>9/2</sub> at 0.914 μm and 0.946 μm are calculated based on the data presented here. The measurements presented here for the Nd:Y<sub>2</sub>O<sub>3</sub> indicate favorable absorption and emission properties. Favorable absorption properties in the ∼0.8-μm pump wavelength are compatible with a variety of potential pump sources. Favorable emission properties at reduced temperatures near 150 K indicate that Nd:Y<sub>2</sub>O<sub>3</sub> operating at 0.914 μm and 0.946 μm will have normal-mode laser thresholds similar to that of room-temperature Nd:YAG operating at 0.946 μm. In <i>Q</i>-switched operation, however, Nd:Y<sub>2</sub>O<sub>3</sub> is predicted to exceed the performance of Nd:YAG due to the lower 1.06/0.94 cross-section ratio, which helps to limit amplified spontaneous-emission effects. Although Nd:Y<sub>2</sub>O<sub>3</sub> is not a new material, it has not been the topic of study due to growth problems associated with its high melting point. New advances in growth techniques and the favorable spectroscopic features of Nd:Y<sub>2</sub>O<sub>3</sub> have inspired a new examination of this material.

© 2002 Optical Society of America

OCIS Codes
(010.4950) Atmospheric and oceanic optics : Ozone
(140.3380) Lasers and laser optics : Laser materials
(140.3530) Lasers and laser optics : Lasers, neodymium
(280.1910) Remote sensing and sensors : DIAL, differential absorption lidar
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
(300.6360) Spectroscopy : Spectroscopy, laser

Citation
Brian M. Walsh, John M. McMahon, William C. Edwards, Norman P. Barnes, Randy W. Equall, and Ralph L. Hutcheson, "Spectroscopic characterization of Nd:Y2O3: application toward a differential absorption lidar system for remote sensing of ozone," J. Opt. Soc. Am. B 19, 2893-2903 (2002)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-19-12-2893

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited