Bis(Guanidinium) Zirconium bis(Nitrilotriacetate) Hydrate, [C(NH2)3]2Zr[N(CH2COO)3]2 � H2O - A New Crystal for Raman Laser Converters

Laser crystals and ceramics: recent advances

“…in the estimation of the Raman gain coefficient, it is more appropriate to use a level slightly below that of the laser pump intensity when the first Stokes lasing becomes perceptible. Examples of single-and manyphonon Stokes and anti-Stokes generation spectra of two widely used inorganic laser host crystals GdVO 4 [354,355] and α-KY(WO 4 ) 2 [337], two organic crystals with predominantly ionic [C(NH 2 ) 3 ]Zr{N(CH 2 COO) 3 ] 2 · H 2 O (GuZN-III) [379]) and van der Waals C 12 H 22 O 11 (α-dglucopyranosido-β-d-fructofuranoside (sucrose), a crystalline food sugar) [443]) structural units, three fluorides with the fluorite structure (CaF 2 [742], SrF 2 [801], and BaF 2 ), as well as two novel promising SRS-active crystals with high Raman gain coefficients (SC-CVD diamond [720] and Na 3 Li(SeO 4 ) 3 · 6H 2 O [734]) and are given in Figs. 24-30. As can be seen from these spectra the organic crystals show significantly larger Stokes and anti-Stokes shifts.…”

Polarized IR and Raman study and DFT chemical quantum calculations of the vibrational levels for benzophenone single crystal

“…It is worth adding that this (C O) vibration gives rise to very efficient stimulated Raman scattering in the z(yy)z polarization, as was demonstrated in our previous paper. 7 This result shows that C-(CO)-C bridge participates efficiently in SRS effect. Interestingly, our previous studies of salol and benzil crystals showed that in these materials C O groups did not participate in the SRS effect.…”

“…We have shown in our previous study that benzophenone exhibits large Raman shifts in stimulated Raman scattering (more than 3000 cm 1 and can be regarded as prospective material for Raman laser application. 7 Benzophenone has been the subject of many vibrational studies. 8 -17 Recently, ab initio calculations have also been published.…”

“…These studies are a continuation of our previous work on the application of this crystal as a Raman laser converter. 7 Polarized IR and Raman spectra of benzophenone suspended in the melt at a controlled, constant temperature of 0.5-1.0°C below the melting point (³48°C). Depending on the degree of supercooling, prismatic crystals of dimensions 30 ð 30 ð 60 mm were grown.…”

Spontaneous and stimulated Raman scattering and infrared spectra of benzil (C14H10O2) crystal: promoting modes of the stimulated effect, anharmonicity and scaling factors of fundamental vibrations

“…These studies are a continuation of our previous work on the application of this crystal as a Raman laser converter. 28 …”