Nonlinear-optical frequency-doubling metareflector: pulsed regime

Multiorder nonlinear diffraction in frequency doubling processes.

We analyze experimentally light scattering from chi(2) nonlinear gratings and observe two types of second-harmonic frequency-scattering processes. The first process is identified as Raman-Nath type nonlinear diffraction that is explained by applying only transverse phase-matching conditions. The angular position of this type of diffraction is defined by the ratio of the second-harmonic waveleng...

Frequency-doubling technology perimetry and optical defocus.

PURPOSE The frequency-doubling technology (FDT) perimeter has no provision for introducing corrective lenses, save for the patient's spectacles, and so patients are sometimes tested in the presence of moderate levels of defocus. The effect of defocus on frequency-doubling (FD) sensitivity was determined for both the commercially available instrument and for smaller targets that may be useful in...

Optical frequency comb generation by pulsed pumping

Nonlinear Optics for Frequency-Doubling in Nanosatellite Laser Communication

Free-space optical communication attracts interest due to its promise of higher data rates for similar size, weight, and power costs compared with radio systems. However, while satellite-to-ground optical communication has been tested from low Earth orbit and the Moon, intersatellite optical links are still an area of active research and development. Second-harmonic generation (SHG, or “frequen...

Frequency Doubling Perimetry

DOS Times Vol. 11, No. 6 December, 2005 The goal of perimetry is to establish an accurate estimate of visual field sensitivity. Perimetry is performed to detect early visual field defects, determine specific patterns of visual field loss for differential diagnosis and monitor for evidence of progression of field loss. Conventionally Standard Achromatic Perimetry (SAP) has been used to achieve t...