Luxpop For index of refraction values and other photonics calculations
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Return the coherence length of a source given a FWHM linewidth (either in GHz or nm, absolute value ) and a centre wavelength (in nm). Enter *either* a GHz value *OR* a nm value for the FWHM
Note: for narrow linewidths, feel free to enter the frequency in scientific notation. e.g. For a 50 MHz linewidth, enter 50e-3 GHz.
FWHM: GHz OR nm centre wavelength: nm
Return the lateral shift, d, (in mm) of a beam with an incident angle of q (in degrees) on a substrate of thickness t (in mm) with index of refraction n. Ambient index of refraction assumed to be 1.
t:mm n: q: degrees
Optical Parametric Oscillators
Determine the grating period, Lg, of a PPLN-based QPM OPO given the pump wavelength, lp (in nm), the desired signal wavelength, ls (in nm), the temperature Tdes (in °C) at which the OPO is designed to operate, and the order, m, of the QPM. The algorithm determines the operating point by the simultaneous solution of the energy conservation and momentum (phase matching) conditions. For proper results, Luxpop uses the indices of refraction (ni,ns,np) as calculated by the temperature-dependent Sellmeier coefficients for the appropriate respective wavelength, as implemented in Luxpop's index of refraction calculation section.
This OPO calculation assumes collinear interaction with all waves polarized extraordinary to the optical axis (eee configuration). The algorithm will also give the idler wavelength for the operating point.
lp:nm ls: nm Tdes °C m:
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Determine the impact of temperature fluctuations on the signal wavelength, ls (in nm), of a given PPLN-based QPM OPO design.
Given an OPO of order m, and pump wavelength lp (in nm) designed to generate a signal wavelength ls at a temperature Tdes, determine how a different actual temperature Tact will affect the generated signal wavelength l's.
When determining the impact of temperature change Luxpop considers two factors: 1) the change in the indices of refraction, ni, ns, and np as the temperature changes, and 2) the thermal expansion of the PPLN substrate material which causes the grating period to change.
This OPO calculation assumes collinear interaction with all waves polarized extraordinary to the optical axis (eee configuration). The algorithm will also give the idler wavelength and the rest of the actual operating point.
ls: nm lp: nm m: Tdes °C Tact: °C
Polarization
Calculate the resulting Stokes Vector emerging from an optical system composed of up to 5 polarization components.
The user supplies the input vector and the components. The algorithm will compute the resuting Stokes Vector. The optical system is set up such that the light first goes through component #1, then #2, then #3 and so on. If there are less than 5 components, just choose "no component" for the remaining components.
For all components, the nominal angle, q (in degrees), represents the rotation from the horizontal. In addition, for retardance components, the specified angle indicates the angular orientation of the fast axis.
Component #1: NO COMPONENT QWP HWP LINEAR POLARIZER q: deg.
Component #2: NO COMPONENT QWP HWP LINEAR POLARIZER q: deg.
Component #3: NO COMPONENT QWP HWP LINEAR POLARIZER q: deg.
Component #4: NO COMPONENT QWP HWP LINEAR POLARIZER q: deg.
Component #5: NO COMPONENT QWP HWP LINEAR POLARIZER q: deg.