Pendellosung effect in photonic crystals

Pendular seismometer for correcting telescope pointing errors

Penetrating the Homunculus -- Near-Infrared Adaptive Optics Images of Eta Carinae

Penn State/McDonald observatory innovative telescopes

Penning discharge as a photoelectric EUV spectroscopy source

Penning source for calibration of x-ray and EUV optics and spectrometers at wavelengths as short as 50 A

Penning type of ionizing energy transfer collisions in a Hg-Ar discharge detected by the optogalvanic effect

Penta-Prism Long Trace Profiler (PPLTP) for measurement of grazing incidence space optics

Perfect absorption and giant magnification with a thin metamaterial layer

Perfect antireflection via negative refraction

Perfect coupling of light to surface plasmons by coherent absorption

Perfect coupling of light to surface plasmons with ultra-narrow linewidths

Perfect drain for the Maxwell Fish Eye lens

Perfect imaging in the optical domain using dielectric materials

Perfect imaging with geodesic waveguides

Perfect imaging with positive refraction in three dimensions

Perfect imaging without negative refraction

Perfect imaging without negative refraction for microwaves

Perfect lensing with phase conjugating surfaces: Towards practical realization

Perfect Optical Solitons: Spatial Kerr Solitons as Exact Solutions of Maxwell's Equations