Flow cell for optical detection having reduced sensitivity...

Details Flow cell for optical detection having reduced sensitivity... Flow cell for optical detection having reduced sensitivity...

2006-10-03

2006-10-03

Lee, Hwa (Andrew) (Department: 2877)

Optics: measuring and testing

For light transmission or absorption

Of fluent material

C356S246000

Reexamination Certificate

active

07116423

ABSTRACT:
An apparatus for cavity enhanced optical detection having an improved flow cell is provided. Sensitivity of the cavity resonance condition to changes in refractive index of an analyte flowing through the flow cell is reduced. More specifically, the round trip optical path defined by the resonant cavity intersects a curved cavity input mirror at a point. This point has a location on the input mirror that is substantially independent of the refractive index of the analyte. In this manner, changes in sample refractive index do not lead to misalignment of the resonant optical cavity.

REFERENCES:
patent: 6452680 (2002-09-01), Paldus et al.

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