Cavity ring-down spectroscopy mirror, and methods of using same

Details Cavity ring-down spectroscopy mirror, and methods of using same Cavity ring-down spectroscopy mirror, and methods of using same

2011-03-29

2011-03-29

Amari, Alessandro (Department: 2872)

Optical: systems and elements

Light interference

Produced by coating or lamina

C356S436000

Reexamination Certificate

active

07916395

ABSTRACT:
A cavity ring-down spectroscopy (CRDS) mirror is constructed to resist migration of a maximum reflectance peak during use where the CRDS mirror may become accreted with contamination that would otherwise cause the maximum reflectance peak to migrate. The mirror includes a mirror stack disposed on a mirror substrate and a plurality of alternating laminates including a first film with a first index of refraction and a second film with a second index of refraction. Each film is a one-quarter wavelength thickness of a given light energy that is to illuminate the mirror. A subsequent laminate is disposed on the plurality of alternating laminates. The subsequent laminate includes a quarter wavelength thickness first film and a second film with a wavelength thickness in a range from greater than 1.5 quarter wavelength and less than 2 quarter wavelength.

REFERENCES:
patent: 5926317 (1999-07-01), Cushing
patent: 6631033 (2003-10-01), Lewis
patent: 7116423 (2006-10-01), Paldus et al.
patent: 7145165 (2006-12-01), Cox et al.

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