SPIE Photonics West, the world's largest international event encompassing industrial and medical applications of optics, lasers, and photonics, will be larger than ever in 2011, with more papers -- nearly 4,000 -- and expanded exhibition space. Approximately 18,000 attendees are expected to convene in technical sessions, industry panels, two exhibitions, and other events covering advances in medical therapeutics and diagnostics, semiconductor, gas, fiber, and diode lasers, micro/nanofabrication, MEMs, optoelectronic materials and devices, displays, communications, and related topics.