Tetragonal LiLuF4 – A novel crystal simultaneously active for SRS‐ and Ln3+‐lasing. Issue 8 (2nd July 2014)

• Record Type: Journal Article
• Authors: Kaminskii, A. A.; Lux, O.; Hanuza, J.; Rhee, H.; Eichler, H. J.; Zhang, J.; Yoneda, H.; Shirakawa, A.
• Is Part Of: Physica status solidi. Volume 251:Issue 8(2014:Aug.)
• Page Start: 1579
• Page End: 1589
• Publication Date: 2014-07-02
• Subjects: Solid state physics -- Periodicals; Solids -- Periodicals; Atomic structure -- Periodicals; 530.41
• DOI: 10.1002/pssb.201451279
• Languages: English
• ISSNs: 0370-1972

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="pssb201451279-sec-0001" sec-type="section"> <p>In this paper, the first investigation of stimulated Raman scattering (SRS) effects in the tetragonal crystal LiLuF₄ is presented. It is known as a promising host‐material for trivalent lasant lanthanides (Ln³⁺). We discovered its three "original" and one "combined" SRS‐promoting modes at room temperature under picosecond laser excitation in the visible and near‐IR spectral range. Apart from multi‐phonon Stokes and anti‐Stokes generation, we observed cross‐cascaded χ⁽³⁾ ↔ χ⁽³⁾ processes involving different pairs of SRS‐active phonons. Furthermore, a comparative estimation of the stead‐state Raman gain coefficient for first Stokes generation in LiLuF₄ related to the most active SRS‐phonon mode with <italic>ω</italic>_SRS1 ≈ 323 cm⁻¹ has been carried out for both the visible and near‐IR. A brief review of the pioneering publications on laser action in Ln³⁺‐ions of all known fluoride SRS‐active single crystals is given in tabular form as well.</p> </sec> </abstract>