Ultra-Long Multi-Pass Optical Systems


Multi Pass optical systems can be provided for operation over one Kilometer, and spanning base paths between 3 and 25 meters. These Ultra-Long Cells can be supplied for use in open air or outdoors, or they can be completely enclosed for operation under vacuum or positive pressures. Two pairs of retro-reflectors are provided on the field mirror in order to accomodate as many as 120 passes of the infrared beam. This means a three meter base path can yield pathlengths up to 360 meters. A 10 meter base path cell achieves pathlengths over one kilometer.

Ultra-Long Multi-Pass Optical systems are superior to single-pass or two-pass telescope systems because of the energy conservation that results from the repeated re-focusing of the beam.

Easily interfaced with all Fourier transform infrared spectrometers, or with non-dispersive or laser based optical systems.

Protected silver optical coatings offer the highest infrared reflectivity, excellent durability and corrosion resistance.

Cell Enclosures can be constructed of glass or aluminum, and coated with a variety of materials like nickel, teflon, or black anodyzing.

The Ultras
 
Part No. Description Price
G-300-V Ultra-long path cell, version 300. Glass-bodied cell, 12 inches ID, 3 meter base path. Variable pathlength up to 360 meters. Volume approx. 280 liters. Black anodized aluminum hardware and protected silver optics. (714)817-9303
O-1000-V Ultra-long path cell, version 1000. Open-air optics with large 8 inch diameter mirrors, 10 meter base path. Pathlengths over 1 kilometer can be obtained. Black anodized hardware and protected silver optics. (714)817-9303

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