Potassium and ammonium hydrogen phthalates KHC6H4(COO)2and (NH4)HC6H4(COO)2- new organic crystals for Raman laser converters with large frequency shift

2009 ◽  
Vol 6 (7) ◽  
pp. 544-551 ◽  
Author(s):  
A.A. Kaminskii ◽  
S.N. Bagayev ◽  
V.V. Dolbinina ◽  
E.A. Voloshin ◽  
H. Rhee ◽  
...  
Keyword(s):  
Frequency Shift ◽  
Raman Laser ◽  
Organic Crystals ◽  
Ammonium Hydrogen ◽  
Large Frequency

Cubic N(CH2CH2NH3)3Br3crystal – a novel non-centrosymmetric organic material for Raman laser converters with large frequency shift

2006 ◽  
Vol 3 (10) ◽  
pp. 490-494 ◽  
Author(s):  
A A Kaminskii ◽  
L Bohatý ◽  
P Becker ◽  
P Held ◽  
H J Eichler ◽  
...  
Keyword(s):  
Frequency Shift ◽  
Organic Material ◽  
Raman Laser ◽  
Large Frequency

Large-frequency-shift tunable parametric oscillation in a Kerr microresonator

2020 ◽  
Author(s):  
Noel Lito B. Sayson ◽  
Toby Bi ◽  
Vincent Ng ◽  
Hoan Pham ◽  
Luke S. Trainor ◽  
...  
Keyword(s):  
Frequency Shift ◽  
Parametric Oscillation ◽  
Large Frequency

The effects of solvents on the stretching vibrations of the thiocyanate and isothiocyanate groups

1964 ◽  
Vol 17 (8) ◽  
pp. 838 ◽  
Author(s):  
RA Cummins
Keyword(s):  
Hydrogen Bond ◽  
Frequency Shift ◽  
Mixed Solvent ◽  
Intensity Change ◽  
Solute Interaction ◽  
Stretching Vibration ◽  
Stretching Vibrations ◽  
Large Frequency ◽  
Phenyl Compounds

The frequency and intensity of the pseudo-antisymmetric -NCS stretching vibration and the -C≡N stretching vibration in -SCN have been measured for the methyl and phenyl compounds of both isomers in a range of solvents. It is shown that the intensity change in the thiocyanates follows a function of the Buckingham type, but that the change in the intensity of the isothiocyanates is complicated by a further effect which could be due to specific solvent/solute interaction. This interaction is reflected in the large frequency shift of the isothiocyanates whereas for the thiocyanates the shift is only very small. However, mixed-solvent studies indicate that the interaction is not strong enough to be classed as a hydrogen bond. Parallel solvent studies on the analogous vibration of the -NCO group indicate that this group, rather surprisingly, is barely solvent-sensitive at all.

Large frequency shift in Fe-based nanocrystalline powder cores

2004 ◽  
Vol 278 (1-2) ◽  
pp. 82-86 ◽  
Author(s):  
Z.J. Zhao ◽  
Y.Z. Fang ◽  
J.Z. Ruan ◽  
X.L. Yang
Keyword(s):  
Frequency Shift ◽  
Nanocrystalline Powder ◽  
Large Frequency

Infrared Spectroscopy and Hydrogen Bonding: Complexing of y-Butyrolactone with o-Cresol

1972 ◽  
Vol 27 (2) ◽  
pp. 221-228 ◽  
Author(s):  
G. Nagarajan
Keyword(s):  
Hydrogen Bonding ◽  
Infrared Spectroscopy ◽  
Frequency Shift ◽  
Mixed Solvent ◽  
Formation Constants ◽  
Free Energies ◽  
Low Concentrations ◽  
Intensity Changes ◽  
Inert Solvent ◽  
Large Frequency

AbstractInvestigations to study the effect of different solvents on the frequency, intensity, and band width of the carbonyl band of y-butyrolactone were carried out on the basis of the mixed solvent techniques with carbon tetrachloride, being the inert solvent. The solvent used for such investigations is o-cresol. The results establish the existence of the 1 : 1 and 1 : 2 complexes at fairly low concentrations for the y-butyrolactone-o-cresol system. The formation constants for these complexes were determined and used to resolve the observed carbonyl bands into the spectra of individual complexes. The observed large frequency shift for the 1 : 2 complex favours a structure in which two molecules of o-cresol are directly bonded to the carbonyl group. The free energies of formation at 25 °C by using these formation constants show that the strength of the interaction increases in going from the 1 : 1 complex to the 1 :2 complex of the same y-butyrolactone-o-cresol system. These results have been discussed in relation to the frequency shift, intensity changes, and half width changes.

α-Alums: K,Rb,Tl and NH4Al(SO4)2⋅ 12H2O – a new family of χ(3)-active crystalline materials for Raman laser converters with large frequency shifts

2004 ◽  
Vol 1 (4) ◽  
pp. 205-211 ◽  
Author(s):  
A A Kaminskii ◽  
E Haussühl ◽  
S Haussühl ◽  
H J Eichler ◽  
K Ueda ◽  
...  
Keyword(s):  
Raman Laser ◽  
Frequency Shifts ◽  
Crystalline Materials ◽  
New Family ◽  
Large Frequency
Sign in / Sign up

Export Citation Format

Share Document