Procedure for automated low uncertainty assessment of empty cavity mode frequencies in Fabry-Pérot cavity based refractometry

• A procedure for automated low uncertainty assessment of empty cavity mode frequencies in Fabry-Pérot cavity based refractometry that does not require access to laser frequency measuring instrumentation is presented. It requires a previously well-characterized system regarding mirror phase shifts, Gouy phase, and mode number, and is based on the fact that the assessed refractivity should not change when mode jumps take place. It is demonstrated that the procedure is capable of assessing mode frequencies with an uncertainty of 30 MHz, which, when assessing pressure of nitrogen, corresponds to an uncertainty of 0.3 mPa. 

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

Keyword

Cavity resonators

Fabry-Perot interferometers

Fiber optic sensors

nitrogen

Cavity-mode frequencies

Fabry-Perot cavity

Gouy phase

Laser frequency

Mode frequencies

Mode number

Phase number

Refractometry

Uncertainty

Uncertainty assessment

adolescent

adult

article

female

frequency

human

laser

male

normal human

pressure

surgery

therapy

Uncertainty analysis

Publication and Content Type

ref (subject category)

art (subject category)