iPhasematch vs AR Fourier Optics Lab

iPhasematch allows you to calculate the phasematching condition of nonlinear wavelength conversion such as SHG or SFM based on published Sellmeier equiations. Downconversion (OPO) can be figured out by the reverse of SFM. It is a subset of the 'Qmix' function of a famous Windows software SNLO by Dr. Arlee Smith. This App does some of what SNLO does on your iOS device. It takes the crystal, two input wavelengths, and temperature and gives the phasematching orientations, effective nonlinear optical coefficients, walk-off angles, angular tolerance and temperature tolerance. In case of SHG, it also gives spectral tolerance. In biaxial crystals, it gives only the phasematching orientations in the principal planes, i.e., either theta=90 deg. or phi=0 or 90deg. Currently supported crystals: BBO, BiBO, CBO, CLBO, LB4, LBO, KBBF, KDP, KD*P, KN, KTP, Mg:LN, Mg:sLN, RBBF, RTP, YAB. NOTE: dn/dT data for LB4 was picked up from discrete data points in the reference and linearly extrapolated. Interface should be intuitive, giving phasematching with a tap of "PM" button,refractive index with "index" button and group index with "Gp.Idx" button, for the given condition (crystal, wavelengths, and temperature). DISCLAIMER: I cannot be held responsible for the result of the calculation it gives. I make every effort to make it accurate, and bug-free, but there could be errors in code. Please just use this on your own discretion.

In the middle of the 19th century, Ernst Abbe revolutionized optics with his diffraction theory of the microscope. He predicted the resolution limit and derived mathematical guidelines for high-performance devices which became known as the "Fourier Optics" method. This enabled Carl Zeiss to design instruments by prior calculations and started the industrialization of physical instrumentation. Understanding Fourier Optics is an important learning goal in every undergraduate optics course. This App was build to teach the basics of Fourier Optics in combination with an according lab experiment. It is intended for undergraduate students in Physics, Photonics and Optical Sciences. We recommend the use of the Thorlabs EDU-FOP2 Fourier Optics Kit: https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=11829&pn=EDU-FOP2/M The App was designed to augment the learning content onto an existing EDU-FOP2 setup ("Lab Companion Mode"), but also allows a stand-alone use of the students at home ("Preparation Mode") or in cases where a suitable setup is not available. It will cover the following topics: - Introduction to Fourier Optics - Physical Background - Mathematical Background - Explanations on a typical lab setup with Köhler illumination (EDU-FOP2 from Thorlabs) - Applications - Historical Background