Abstract

We wish to report a technique of using the 752.5 nm line of the Kr+ laser to excite the Raman effect in weakly scattering samples in a gasketed diamond anvil pressure cell. The use of this near-infrared excitation substantially reduces the fluorescence of the diamond windows which otherwise tends to distort and overwhelm weak Raman signals. This excitation also reduces interference from the fluorescence of the ruby fragment placed in the cell for pressure measurement. These are, we believe, the first spectra obtained from weak Raman scatterers in a diamond/ruby pressure cell.

Spectroscopy at very high pressures. 14: Laser Raman scattering in ultrasmall samples in a diamond anvil cell

D. M. Adams, S. K. Sharma, and R. Appleby
Appl. Opt. 16(9) 2572-2575 (1977)

Holographic tracking and sizing of optically trapped microprobes in diamond anvil cells

F. Saglimbeni, S. Bianchi, G. Gibson, R. Bowman, M. Padgett, and R. Di Leonardo
Opt. Express 24(23) 27009-27015 (2016)

Laser Raman Spectra of Liquid and Solid Bromine and Carbon Disulfide Under High Pressure

A. J. Melveger, J. W. Brasch, and E. R. Lippincott
Appl. Opt. 9(1) 11-15 (1970)

Spectroscopy at very high pressures. 23: Mid ir ultramicrospectroscopy with a gasketed diamond anvil cell

David M. Adams and Shiv K. Sharma
Appl. Opt. 18(5) 594-595 (1979)

Measuring the volume of a fluid in a diamond anvil cell using a confocal microscope

G. J. Hanna and M. D. McCluskey
Appl. Opt. 48(9) 1758-1763 (2009)