Cover Story

Scientists use two-photon absorption fluorescence to recover written information on Roman relics and solve a 2,000-year-old mystery. more>>


Photonic Crystal Fiber: Finding the Holey Grail

Photonic crystal fiber permits much wider adjustment of key characteristics such as modal phase index, dispersion, nonlinearity and birefringence than is possible in conventional fiber. more>>

Improved Interferometric Optical Testing

Modern electronics, computers and software are changing the ways that interferometry can be used and broadening its metrology applications in industrial and research labs. more>>

The Breakthrough Birth of the Diode Laser

The birth of the diode laser 45 years ago happened very quickly. Decades after the discovery of LEDs, a key experiment showed that diode junctions could emit efficiently. Within four months, four groups had crossed the threshold. By Jeff Hecht more>>

Breaking Barriers to Innovation: Report from CLEO/QELS and PhAST 2007

Thousands of scientists, engineers and executives converged in Baltimore in May to learn about the latest innovations in lasers and photonics. more>>


Researchers at the University of Alberta use buckling delamination to make integrated hollow waveguides. more>>

Researchers use light pressure to move small particles in liquid. more>>

The London Eye gets an LED Makeover more>>



Re-Setting Expectations for Students and Retired Scientists

The Retired Scientists, Engineers and Technicians (ReSET) program brings retired professionals into the classroom to help teachers and students implement hands-on, inquiry-based science experiments. more>>

Optics Innovations

Taking the Leap: The Story of Thorlabs

The winner of the 2007 PhAST/Laser Focus World Innovation Award stays ahead by constantly reinventing itself. more>>

Policy Matters

Supporting Science in the House

A conversation with Rep. Vernon J. Ehlers. more>>

The History of OSA

Chronicling OSA’s History

Contributing editor John Howard explains how the “History of OSA” came to be, and asks for your help in preserving it. more>>

Conversations in Optics

Our conversation with Eli Yablonovitch, the father of photonic crystals. more>>