Orthorhombic tris(glycine) zinc chloride Gly₃��ZnCl₂��� a new semi-organic many-phonon SRS crystal manifesting different nonlinear-laser (��⁽³⁾+��⁽²⁾) interactions under one-micron picosecond pumping

Abstract

Nonlinear-laser properties of crystals of non-centrosymmetric orthorhombic semi-organic tris(glycine) zinc chloride Gly 3 ·ZnCl 2 are reported in this paper. Under one-micron picosecond pumping many-phonon high-order SRS, a more than two-octaves Stokes and anti-Stokes lasing frequency comb, "Cherenkov"-type SHG, THG, and several cascaded parametric self-sum-frequency generation processes were observed. All recorded Raman-induced laser wavelengths were identified and attributed to the χ (3) -promoting vibration modes of the crystal. A brief review of nonlinear-laser properties of known SRS-active heterodesmic semi-organic crystals with partially ionic bonding character between structural units is given as well.Example of crystals of Gly3·ZnCl2 grown from aqueous solution

Non-centrosymmetric tetragonal Sr2ZnGe2O7- a novel melilite-type nonlinear-laser crystal offeringχ(2)-,χ(3)-, and cascadedχ(3)↔χ(2)-interactions

“…[29][30][31][32][33][34][35][36] [37]) with a pulse duration of τ f 1 ≈ 110 ps [38]. Included in our experimental setup (that is sketched in parts in Fig.…”

Difficulties in the growth and characterization of non-linear optical materials: A case study of salts of amino acids

“…Many of these publications have proven the importance of metalorganic compounds as promising materials for likewise applications due to convenient combinations of physical properties. Amino acid compounds are no exception ( [2][3][4], and references therein), therefore this family is presently very actively investigated. However, many scientists seem so enthusiastic in their search that studies are published hurriedly on 'new NLOmaterials' which have not been properly characterized.…”

Stimulated Raman scattering in “garnet” Lu3Al5O12 ceramics - a novel host-materiel for Ln- and TM-lasant ions

“…As in our previous works (see, e.g. [41,42]), for this aim we used the sufficiently tested method based on the well known ratio g (accordance to the conventional definition adopted in [46,47] In recent years SRS-effect was observed also in several "garnet" crystals and ceramics with ordered and partly disordered structure, most of them are also host-materials for Ln and TM lasant ions. To provide a place of ceramic stud-ied among those "garnet" crystalline materials the second small overview composed, which is presented as Table 3.…”

“…[41][42][43][44]). In this work, as in our previous similar study it was used as the pump source a Xe-flashlamp- into the second harmonic generation with pulse duration of abbot 80 ps.…”