Reduced Absorption of Light at High Laser Power Densities

Staerk, Hubertus; Czerlinski, George

doi:10.1038/207399a0

Cited by 7 publications

(1 citation statement)

References 3 publications

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“…The first example of saturation hole burning in the absorption spectrum of a solid was obtained in ruby (10) and has since been used to obtain high-resolution absorption (10)(11)(12)(13)(14)(15)(16)(17), Zeeman (10,11), Stark (12)(13)(14)(15)(16) and hyper-fine (17) spectra of metal atoms in solid systems at low temperatures. Saturation hole burning has also been observed in solutions of organic dyes (18) (which has now found wide use in the passive mode-locking of lasers (19)), in solutions of aromatic hydrocarbons (20), and. in the zero-field microwave spectra of triplet states (21,22), in each case providing new information about the energetics and dynamics of the systems studied.…”

Section: Review Of Optical Hole Burningmentioning

confidence: 99%

Nonphotochemical hole burning and the nature of amorphous solids

Stout

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Section: Review Of Optical Hole Burningmentioning

confidence: 99%

Nonphotochemical hole burning and the nature of amorphous solids

Stout

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Kinetic Studies of Very Rapid Chemical Reactions in Solution

Flynn

1974

Chemical and Biochemical Applications of Lasers

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Laser temperature-jump spectrophotometer using stimulated Raman effect in H2 gas for the study of nanosecond fast chemical relaxation times

Ameen

1975

Review of Scientific Instruments

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Transient CD measurements at submillisecond time resolution-application to studies of temperaturejump relaxation of equilibria of chiral biomolecules Rev. Sci. Instrum. 48, 953 (1977);A laser temperature-jump spectrophotometer for the study of chemical relaxation times with a heating time of about 18 nsee is described. The stimulated Raman effect in hydrogen gas at 80-atm pressure produces a frequency shift of a neodymium-glass laser from 1.06 to 1.89 11, at which the absorbance of water is very high. The use of H2 as a Raman active material for the frequency shifting, instead of liquid N2 previously used, is emphasized, which eliminates the need for low-temperature storage facilities and creates the possibilities for generation of other wavelengths, by using a mixture of gases and varying the pressures to obtain other absorption frequencies for the heating of the solvent molecules. For aqueous solutions heated by 1.89-J-L radiation pulses, a special spacer cell is described, which allows maximum coaxial overlap between the laser pulse and the analyzing beam. For other nonaqueous solvents a multirefleetion cell is constructed. The H2 Raman-shifted pulse is narrowed from a 28-nsee half-width of the original 1.06-J-L Nd+ 3 -glass laser to IS-nsee halfwidth at 1.89 J-L. The conversion efficiency of usually about 20% is increased to about 40% using a multistage. Hl gas Raman cell device, in which the scattering focal volume is increased.

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Reduced Absorption of Light at High Laser Power Densities

Cited by 7 publications

References 3 publications

Nonphotochemical hole burning and the nature of amorphous solids

Nonphotochemical hole burning and the nature of amorphous solids

Kinetic Studies of Very Rapid Chemical Reactions in Solution

Laser temperature-jump spectrophotometer using stimulated Raman effect in H2 gas for the study of nanosecond fast chemical relaxation times

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