Feature Articles

The Attosecond Revolution

After years of exploration, researchers have discovered that pushing the limits of nonlinear optics allows them to produce ultra-short XUV laser pulses.

by P.B. Corkum and Zenghu Chang
Microspiral Resonators for Integrated Photonics

Microspiral resonators allow for unidirectional lasing and the direct coupling of light to the device’s microcavity—two characteristics that aren’t possible with conventional microresonators.

by Valerio Annovazzi-Lodi, Apostolos Argyris, Mauro Benedetti, Michael Hamacher, Sabina Merlo and Dimitris Syvridis
Adaptive-Focus Lenses

Researchers have recently demonstrated various approaches for constructing practical, compact adaptive-focus lenses. This article summarizes the advantages and drawbacks of each.

by Hongwen Ren, Su Xu, Yeong-Jyh Lin and Shin-Tson Wu
A Chaos-Based Approach to Secure Communications

These authors describe a unique approach to safeguarding data transmission over the Internet—by embedding messages within optical chaos.

by Andrew W. Poon, Xianshu Luo, Hui Chen, Gustavo E. Fernandes and Richard K. Chang
Hubble’s Final Servicing Mission

Scientists predict that this last round of repairs will finally allow astronomers to realize the full potential of the orbiting telescope.

by Patricia Daukantas

Departments and Columns

Scatterings
“Telescopic” Pixels Could Boost Displays

An elegant optical design from the 17th century could lead to a high-efficiency alternative for computer monitors.

Scatterings
Lasers and Gold Nanoshells Team Up Against Cancer

Tiny gold nanoshells—known for their surface plasmonic properties—may someday help guide cancer-seeking heat therapy to its target.

Scatterings
Did You Know?

Increasing the spatial resolution of X-ray microscopy.

Optical Engineering
The New CIE 127 Standard for LED Measurement

Recently, the CIE has published an updated version of its ubiquitous lighting standard, the CIE 127. Among other things, the new standard refines the technique for measuring total radiant flux and introduces a concept called partial LED flux.

Optics Innovations
Raydiance Inc.: Thinking Big About Short Pulses

The Petaluma, Calif., start-up is taking the ultrashort pulse laser industry toward small, smart technology and big markets.

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Also in this Issue

President's Message
President’s Message

Letters
Letters

OSA Today
OSA Today

In Memory
In Memory

Remembering Jean M. Bennett and Robert F. Wagner.

Book Reviews
Book Reviews