Abstract

The development of the diamond-anvil cell (DAC) has had a major impact on the field of high-pressure Raman spectroscopy. Despite its success, the DAC still has one drawback, however, in that it requires care and precision in the optical alignment of the cell and other components in the scattering chamber of the Raman spectrometer. The use of the DAC together with a micro-Raman spectrometer should overcome this limitation. Additional advantages of the micro-Raman technique lie in the high collection efficiency of the microscope optics, so that very low laser powers can be used. Low laser powers are necessary to avoid local heating and decomposition of thermally sensitive compounds. Recently, Sharma <i>et al.</i> have used a DAC and microscope combination to examine the stress induced in the diamond anvils under pressure, but, to our knowledge, the method has not been used to study phase transitions in solids.

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)

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)

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)