Use of a Microscope Objective Corrected for a Cover Glass to Improve Confocal Spatial Resolution inside a Sample with a Finite Index of Refraction

Detection of small amounts of H2O in CO2‐rich fluid inclusions using Raman spectroscopy

“…At Budapest University of Technology and Economics (Hungary), inclusions were analyzed using a Jobin Yvon confocal Labram Raman instrument with 532-nm Nd : YAG laser excitation, 20 mW laser energy and 50× objective. At Virginia Polytechnic Institute and State University (USA), a similar instrument with 514-nm argon ion laser, 40 mW laser energy and 40× objective (with adjustable coverslip collar [11] ) was used. At G2R in Nancy (France), a Dilor Labram-type Raman spectrometer with notch filter, 514-nm argon ion laser, 40 mW laser power and 80× objective was used.…”

Combined microthermometric and Raman spectroscopic technique to determine the salinity of H2O–CO2–NaCl fluid inclusions based on clathrate melting

“…A 40Â (N.A. = 0.55) objective with cover-glass correction to improve signal/background ratio (Adar et al, 2004) was used for fluid inclusion analyses. The beam diameter for the 40Â objective was approximately 1 lm; the beam diameter for the 3.5Â objective was not determined but is estimated to be on the order of 3-5 lm.…”

Experimental determination of the Raman CH4 symmetric stretching (ν1) band position from 1–650bar and 0.3–22°C: Application to fluid inclusion studies

“…= 0.55) objective with cover-glass correction to improve signal/ background ratio (Adar et al, 2004). Temperature was measured using an Fe-constantan thermocouple that was calibrated using pure water (0.0 and 374.1°C) and H 2 O-CO 2 (À56.6°C) synthetic fluid inclusions (Sterner and Bodnar, 1984).…”