Simple, stable, and compact multiple-reflection optical cell for very long optical paths.

A new type of multiple-reflection optical cell is presented. One of the main advantages of this type of cell is that it can be made of standard mirrors without particular tolerance while allowing a great number of reflections and thus a large optical path, only limited by the reflection coefficient of the mirrors. The configuration is simple, compact, stable, and cheap. This cell consists of three mirrors as in a White cell but its principle is different. It behaves as a multiplier of a Herriott cell from which it inherits the opto-mechanical stability qualities. The Herriott cell and the White cell are two particular cases of this type of cell. As examples, a demonstrator and an absorption cell contained in a volume of 5 l are presented. The first device is usable with a laser in visible light. The second device is usable with an infrared laser diode for the detection of atmospheric trace species.

[1]  P. Connes,et al.  L'étalon de Fabry-Perot sphérique , 1958 .

[2]  D. Reuter,et al.  Two new long-pass cells for infrared and visible spectroscopy , 2001 .

[3]  D. Hunten,et al.  Tunable diode laser IR spectrometer for in situ measurements of the gas phase composition and particle size distribution of Titan's atmosphere. , 1990, Applied optics.

[4]  J B McManus,et al.  Astigmatic mirror multipass absorption cells for long-path-length spectroscopy. , 1995, Applied optics.

[5]  Richard B. Zipin.  The apparent thermal radiation properties of an isothermal V-groove with specularly reflecting walls , 1966 .

[6]  Ulrich Platt,et al.  An improved open path multi-reflection cell for the measurement of NO2 and NO3 , 1993, Other Conferences.

[7]  H. Kogelnik,et al.  Laser beams and resonators. , 1966, Applied optics.

[8]  E O Schulz-Dubois.  Generation of square lattice of focal points by a modified white cell. , 1973, Applied optics.

[9]  John U. White.  Long Optical Paths of Large Aperture , 1942 .

[10]  C. J. Barth,et al.  Mirror system for collecting Thomson-scattered light in a tangential direction. , 1994, Applied optics.

[11]  L. Vitushkin,et al.  Design of a multipass optical cell based on the use of shifted corner cubes and right-angle prisms. , 1998, Applied optics.

[12]  R. A. Hill,et al.  Focused, multiple-pass cell for Raman scattering. , 1974, Applied optics.

[13]  J F Doussin,et al.  Multiple-pass cell for very-long-path infrared spectrometry. , 1999, Applied optics.

[14]  S M Chernin,et al.  Optical multipass matrix systems. , 1991, Applied optics.

[15]  A. Stace,et al.  Design considerations for the construction of a reflecting symmetric multipass cell for use in laser molecular‐beam experiments , 1987 .

[16]  Herwig Kogelnik,et al.  Off-Axis Paths in Spherical Mirror Interferometers , 1964 .

[17]  V. Catoire,et al.  SPIRALE: a multispecies in situ balloonborne instrument with six tunable diode laser spectrometers. , 2005, Applied optics.

[18]  D Horn,et al.  2.5-km Low-Temperature Multiple-Reflection Cell. , 1971, Applied optics.

[19]  G. Mégie,et al.  Atmospheric CH4 and H2O monitoring with near-infrared InGaAs laser diodes by the SDLA, a balloonborne spectrometer for tropospheric and stratospheric in situ measurements. , 1999, Applied optics.

[20]  R. May,et al.  Aircraft (ER-2) laser infrared absorption spectrometer (ALIAS) for in-situ stratospheric measurements of HCI, N(2)O, CH(4), NO(2), and HNO(3). , 1994, Applied optics.

[21]  Donald R. Herriott,et al.  Folded Optical Delay Lines , 1965 .