Design and performance are given of a multiple traversal low temperature absorption cell that operates routinely at a path length of 230 m. The system is comprised of an f/30-aperture White cell surrounded by an aluminum Dewar. The cell has been used in the temperature range 300–77 K and may be pressurized to 3 atm. Vacuum feedthrough adjustments are employed in order to correct for defocusing of the mirrors during the cooling process.
© 1968 Optical Society of America
Original Manuscript: April 26, 1968
Published: November 1, 1968
Roger P. Blickensderfer, George E. Ewing, and Rex Leonard, "A Long Path, Low Temperature Cell," Appl. Opt. 7, 2214-2217 (1968)