Stimulated emission (4F3/2 → 4I11/2 channel) with LD and Xe-flashlamp pumping of tetragonal, incommensurately modulated Ca2MgSi2O7:Nd3+(Na+) - a new disordered laser crystal

Abstract

Non‐centrosymmetric tetragonal crystalCa2MgSi2O7:Nd3+(Na+) with incommensurately modulated melilite‐type structure is presented as a new laser crystal. By LD and Xe‐flashlamp pumping its CW and free‐running pulsed stimulated emission of the 4F3/2 → 4I11/2 generation channel of Nd3+ lasant ions was excited. (© 2010 by Astro Ltd., Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA)

Many-phonon stimulated Raman scattering and related cascaded and cross-cascaded χ(3)-nonlinear optical effects in melilite-type crystal Ca2ZnSi2O7

“…[2][3][4][5][6][7][8]). Special attention in recent years was devoted to studies of various manifestation of cascaded χ (3) ↔ χ (3) and χ (3) ↔ χ (2) interactions in these crystals and to elici- [2,5] SRS, SHG, THG, SFG, self-FD(SRS), self-SRS(FD), ≈ 770, ≈ 257 [12] self-SRS(SRS), St-ASt comb [12] Note: only references from peer-reviewed journals are included.…”

“…For more than forty years, beginning with [1], the laser (with Ln 3+ ions) and nonlinear-optical properties of noncentrosymmetric tetragonal melilite-type crystals are in the focus of attention of many groups of researchers (see, e.g. [2][3][4][5][6][7][8]). Special attention in recent years was devoted to studies of various manifestation of cascaded χ (3) ↔ χ (3) and χ (3) ↔ χ (2) interactions in these crystals and to elici-Crystal SE channels of Nd 3+ ions Observed χ (3) -and χ (2) -nonlinear laser effects SRS-promoting vibration modes, cm ≈ 667, ≈ 500 4 F 3/2 → 4 I 13/2 [3,15] [present work] Sr2MgGe2O7 SRS, SHG, THG, SFG, self-SFG(FD) h) , ≈ 779 [12] self-SFG(FD,SRS) i) , St-ASt comb [12] Sr 2 ZnGe 2 O 7 SRS, SHG, THG, SFG, self-SFG(FD), ≈778 [11] self-SFG(FD,SRS), St-ASt comb [11] Ba 2 MgGe 2 O 7 4 F 3/2 → 4 I 11/2 [1,5] SRS, SHG, THG, SFG, "Cherenkov-type" SHG j) , 771.5 [9] self-FD(SRS) k) , self-SRS(FD) l) , self-SRS(SFG) m) , self-SFG(FD,SRS) n) , St-ASt comb [9] Ba2ZnGe2O7 4 F 3/2 → 4 I 11/2 [2,5] SRS, SHG, THG, SFG, self-FD(SRS), self-SRS(FD), ≈ 770, ≈ 257 [12] self-SRS(SRS), St-ASt comb [12] Note: only references from peer-reviewed journals are included.…”

Determination of a stimulated emission cross section gradient on the basis of the performance of a diode-end-pumped Nd:YVO4laser

“…Furthermore, in most high-power solid state lasers, variation of the emission cross section with the temperature has a serious effect on the laser performance. Spectroscopic properties and stimulated emission cross sections of Nd:YAG crystals at various temperatures have been studied extensively [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Commonly, the temperature under study is in the range of 77-350 K. In this method, parameters such as the emission linewidth, branching ratio and intensity of the emission lines are acquired from fluorescence spectra in order to calculate the stimulated emission cross section at the respective temperature through the Fuchtbauer-Ladenburg (F-L) formula.…”

A continuous-wave and passivelyQ-switched Nd:LaGGG laser at 937 nm

“…Nd-doped disordered crystals have attracted much attention in recent years because they have the combined advantages possessed by Nd-doped glass and ordered crystals, and they can also generate simultaneous multi-wavelength emission in Q-switching and mode-locking regimes [1][2][3][4][5][6][7]. Compared with other laser crystals, Nd:GGG crystal has the merits of larger size (no core growth), higher Nd ion doping concentration, wider phase homogeneity with high pulling rate (up to 5 mm h −1 ) and so on [8].…”