Profile: Advanced Photonix, Inc. supplies opto-electronic solutions & terahertz sensors and instrumentation to the OEM customer base. Our products include silicon PIN photodiodes, silicon & III-V avalanche photodiodes, InGaAs and InP photodiodes, LED arrays & assemblies, detector/amplifier hybrid assemblies, high-speed InGaAs receivers and terahertz systems. High speed optical receivers address the entire range of 10 Gbps & 40 Gbps applications utilizing our proprietary PIN and APD photodiodes. Bandwidths range from 2 GHz to 60 GHz and cover wavelengths from 700 nm to 1650 nm. Terahertz radiation can be used to image through materials yielding high spatial resolution and has the ability to resolve both time & amplitude information. It is safe for humans and can provide spectroscopic information, as well as produce images. It is applied to many applications including on-line non-destructive testing for quality control of products & packaging for industrial markets, weapons & explosives detection for homeland security & defense markets, topical imaging for the medical market, quality control of external skins on space vehicles for the aerospace and military markets.