Bob Tamosaitis

Bob Tamosaitis is the president at AdvR (Bozeman, MT).

FIGURE 1. Backwards QPM can be used in a potassium titanyl phosphate (KTP) waveguide to produce a counterpropagating SPDC source. The pump source propagates from left to right through the waveguide. The KTP waveguide is poled with submicron periods allowing for quasi-phase-matched counterpropagating signal and idler photon pairs. Detection of the backwards propagating idler photon can be used to herald the presence of the forward propagating signal, generating a spectrally pure source of heralded photons.

NONLINEAR OPTICS: NLO waveguide structures advance quantum communications

May 1, 2013
Periodically poled nonlinear optic (NLO) crystal waveguides overcome obstacles inherent in bulk NLO devices, generating useful quantum states that support leading-edge quantum...
(Courtesy of AdvR)
Three different 2D patterns produced by the output of two orthogonal beam deflectors were captured with a CCD camera. The same deflector technology is used in a 1 × 35 fiber-in, fiber-out EO switch (below).
Detectors & Imaging

FIBER-OPTIC INTERCONNECTS: Electro-optic deflection enables 1 × 35 fiber-optic switch

June 1, 2010
Poled electro-optic crystals are at the core of a compact fiber-optic switch design that can handle watts of optical power at megahertz switching speeds.