Stimulated Raman scattering in natural crystals of fluorapatite, Ca₅(PO₄)₃F

Author(s)

Alexander A. Kaminskii, Ladislav Bohaty, Oliver Lux, Hanjo Rhee, Hans-Joachim Eichler, Eugen Libowitzky, Reiner Kleinschrodt, Hitoki Yoneda, Akira Shirakawa, Petra Becker

Abstract

Hexagonal Ca5(PO4)3F, known as natural crystal fluorapatite and oldest host-crystal for Ln3+-lasant ions, is presented as a Raman-active material. High-order Raman-induced (3)-nonlinear processes are discovered in natural crystals of fluorapatite under picosecond pumping at 1.064 µm and 0.532 µm wavelength. A multitude of Stokes and anti-Stokes components is generated in the UV, visible and near-IR spectral region by stimulated Raman scattering (SRS) and Raman four-wave mixing (FWHM), resulting in a frequency comb with a width of 520 THz. The spectral lines are identified and attributed to the 1(Ag) vibration mode of the tetrahedral [PO4] units which is related to a Raman shift of SRS ca. 965 cm-1. The first Stokes steady-state Raman gain coeff. in the near-IR spectral range is estd. to be >0.38 cm·GW-1. Finally, a short review of SRS-promoting vibration modes and obsd. (3)- nonlinear interactions in all known SRS-active natural crystals (minerals) is given.

Organisation(s)

Department of Mineralogy and Crystallography

External organisation(s)

Technische Universität Berlin, Universität zu Köln, The University of Electro-Communications, Russian Academy of Sciences

Journal

Laser & Photonics Reviews

Volume

10

Pages

814-825

No. of pages

12

ISSN

1863-8880

DOI

https://doi.org/10.1002/lpor.201600100

Publication date

09-2016

Peer reviewed

Yes

Austrian Fields of Science 2012

104026 Spectroscopy, 105116 Mineralogy

Keywords

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Atomic and Molecular Physics, and Optics

Portal url

https://ucrisportal.univie.ac.at/en/publications/8916f945-3f06-4c17-afc0-570c6f8a2587