HO-ED-INT-10A Fabry - Perot Interferometer CCD Based

Fabry - Perot Interferometer CCD Based Computer interfaced Fabry-Perot interferometer (Model No:HO-ED-INT-10A) is similar to projection type (model no:HO-ED-INT-10), apart from the fact that in this case, the interference pattern is captured by a CCD sensor and displayed on a computer monitor. The advantage of computer interface is that the pattern can be saved for future analysis. In addition, measurements can be taken directly from the monitor by using the software module provided. In the etalon, distance between partially reflecting mirrors can be precisely varied in microns. One of the beam splitters can be kinematically adjusted for initial settings. Experiment:    To find the wavelength of monochromatic light The wavelength of laser is calculated by, λ  =  ( 2d / N ) Δ where ‘d’ is the change in position that occurs for ‘N’ fringes to pass and Δ is the calibration constant of the micrometer    To determine the spacing between the plates of fabry perot etalon from the fringe Pattern The Spacing of the Etalon is given by,   t  =  nD2λ  /  χn2 where n is the order, ‘D ’ is the distance between the etalon and the screen, ‘λ’ is the wavelength of light used. χn2  =  χm+n2  -  χm2 χm+n2 is the square of the radius of (m+n)th ring and χm2 that of mth ring.    To find the finesse and free spectral range (FSR) of etalon from the fringe calibration at different cavity thickness The Free Spectral Range of the Etalon is given by, FSR  =  c / 2t, Where c is the speed of light in air and t is the spacing of the Etalon The finesse is a measure of the interferometer's ability to resolve closely spaced spectral lines. The finesse F is defined by the following equation. F  =  π √R / ( 1-R ) Where, R is the reflectivity of surfaces Specifications:   Spacing of Etalon     2 - 8 mm     Ratio R/T     80 / 20     Aperture     25 mm Features: Mercury vapor lamp is used as light source     Compact design     Fine tuning is possible in etalon     High resolution CCD camera Drawings: Video: Click HERE for Video Related Topics: Interference of light     Fabry Perot etalon     Finesse of etalon   Scope for Delivery: Optical Rail Fabri-Perot Interferometer Kinematic Laser Mount Colour Filter Mount Plano Convex Lens with Mount Supply Camera Lens Assembly with Mount Colour Filters (Green, Blue) Diode Laser with Power supply (Red) CCD Camera Mercury Vapor Lamp with Power Supply Accessories Allen Key Instruction Manual