2026.1.2.8 ␍ //define the refractive index of the medium for which the phase function should be defined␍ double refrIndex = Medium.GetRealRefractiveIndex(new Vector3D(0, 0, 0), DesignᴗWavelength);␍ ␍ //generate object storing wavefront response value and gradient␍ double k0n = MathFunctions.TwoPi * refrIndex / DesignᴗWavelength;␍ SphericalFunction sphereFunction = new SphericalFunction((-1) * FocalᴗLength, k0n, 0, 0, 0);␍ double phase = sphereFunction.GetValue(new VectorD(r, 0));␍ double gradient = sphereFunction.GetDerivatives(new VectorD(r, 0)).X;␍ RadialWavefrontPhaseInformation wavefrontPhaseInformation = new RadialWavefrontPhaseInformation(phase, gradient);␍ ␍ //return generated wavefront phase information␍ return wavefrontPhaseInformation;DesignᴗWavelength<_variableType typeID="VirtualLabAPI.Core.Modules.SupportedDataTypes, VirtualLabAPI, Version=2026.1.2.8, Culture=neutral, PublicKeyToken=null">Double␣0<_value typeID="System.Double, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e">9.4E-07The vacuum wavelength for which the phase values should be defined.falseLength␣1␀-11falsefalsetrueFocalᴗLength<_variableType typeID="VirtualLabAPI.Core.Modules.SupportedDataTypes, VirtualLabAPI, Version=2026.1.2.8, Culture=neutral, PublicKeyToken=null">Double␣0<_value typeID="System.Double, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e">0.01The on-axis distance at which collimated light should be focused.falseLength␣1␀-11falsefalsetrueMedium<_variableType typeID="VirtualLabAPI.Core.Modules.SupportedDataTypes, VirtualLabAPI, Version=2026.1.2.8, Culture=neutral, PublicKeyToken=null">Medium␣13<_value typeID="VirtualLabAPI.Core.OpticalSystems.HomogeneousMedium, VirtualLabAPI, Version=2026.1.2.8, Culture=neutral, PublicKeyToken=null" Referent="6">Edlen_AirFormula␣121.9300000000000002E-074.9999999999999996E-0520101325000000001INF0000-1-1-1-1-120000000{}double RefractiveIndex = 1.0; /*********************************************** *********** INSERT YOUR CODE HERE ************* ***********************************************/ return RefractiveIndex;<_sampledRefractiveIndex typeID="VirtualLabAPI.Core.Numerics.DataArray1D, VirtualLabAPI, Version=2026.1.2.8, Culture=neutral, PublicKeyToken=null">␀10false<_sampledAbsorptionCoeff typeID="VirtualLabAPI.Core.Numerics.DataArray1D, VirtualLabAPI, Version=2026.1.2.8, Culture=neutral, PublicKeyToken=null">␀Constant␣01.9300000000000002E-074.9999999999999996E-05AbsorptionCoefficient␣0NaN0double AbsorptionCoefficient = 0.0; /*********************************************** *********** INSERT YOUR CODE HERE ************* ***********************************************/ return AbsorptionCoefficient;{}{}{}8/7/2017 4:06:46 PMAttribution␣1true␀1␀␀AirGasOrVacuum␣2trueMiscellaneousInfrared000␀1000<_mediaPeriod3D typeID="VirtualLabAPI.Core.Numerics.Vector3D, VirtualLabAPI, Version=2026.1.2.8, Culture=neutral, PublicKeyToken=null" Referent="15">INFINFINFtrue11120101325falseAir in Homogeneous MediumHomogeneous MediaThe medium for which the phase function should be defined. The medium after the metalens interaction.falseNoUnit␣0␀NaNNaNfalsefalsetrue␀1/13/2026 12:50:26 PMAttribution␣1false␀1