Feature Articles

High-Power, High-Brightness Direct-Diode Lasers

This is the century of the diode laser. These authors describe how direct-diode lasers are entering the high-power laser market, enabling materials-processing applications such as welding, soldering and cutting.

by Stephan Strohmaier, Christoph Tillkorn, Peter Olschowsky and John Hostetler
Making the First Low-Loss Optical Fibers

Thirty years before the laser was invented, researchers laid the groundwork for another huge breakthrough in optics—the development of low-loss fiber for communications.

by Peter C. Schultz
Broadband Nonlinear Frequency Conversion

Researchers are working to develop new techniques for nonlinear frequency conversion as well as new crystal design structures to help meet this need. Their work is leading to applications in optical communications, metrology and other areas.

by Haim Suchowski, Barry D. Bruner, Ady Arie and Yaron Silberberg
So What Do I Do with a Ph.D., Anyway?

In this roundtable discussion, three young professionals with a background in optics talk with OPN about how they answered this important question for themselves.

by Michael M. Mielke, Alicia Jackson and Winnie Ye

Departments and Columns

Scatterings
Interrogating Terahertz with Light

A new scheme developed by researchers encodes the phase and amplitude information of terahertz waves onto ultraviolet light that can be detected from a distance and from almost any angle.

Optical Engineering
A Red Light for Green Laser Pointers

Inexpensive green laser pointers can emit 20 mW of unspecified infrared radiation in addition to their green output. The problem derives from an unsafe design. This article describes a simple diagnostic method to identify hazardous pointers by using a digital camera, a Web camera, a remote control and a compact disc.

Career Focus
Thinking Beyond Academia in Your Job Search

Today’s math problem: If twelve physics graduate students are all being trained to take over one professorial position, what happens to the other eleven?

Light Touch
Diffraction, the Silk Handkerchief, and a Forgotten Founder

Between signing the Declaration of Independence, composing opera, and helping to design the U.S. flag, Francis Hopkinson also dabbled in optics—using his silk handkerchief to observe diffraction.

Conversations in Optics
OPN Talks with Henry C. Kapteyn and Margaret M. Murnane

Our conversation with Henry C. Kapteyn and Margaret M. Murnane, ultrafast laser experts and Arthur L. Schawlow prize recipients.

Viewpoint
Do We Need Visas for Science-Related Travel?

Scientists who must acquire visas to travel to technical conferences are often forced to cancel their plans due to procedural hassles and delays. As we look to promote international collaboration among researchers, the time may be right to consider other alternatives for science-related travel.

The History of OSA
Wood Visits Rayleigh's Lab

When Robert W. Wood journeyed across the pond in 1904, he wound up feeling right at home in the lab of another legendary optical physicist.

Scatterings
Deep-UV Laser Pulses Get Even Shorter

The Germany-based team known for its research into ultrashort light-pulse generation has pushed the record for the shortest deep-ultraviolet pulses below 3 fs.

Scatterings
Silicon On-Chip Amplifier Boosts Mid-IR

Researchers at Columbia University and IBM's Thomas J. Watson Research Center built an optical parametric amplifier (OPA) on a single silicon chip.

Scatterings
Triple-Slit Experiment Has Quantum Implications

A century after it was first used to probe the duality of waves and particles, a modified version of the double-slit experiment—using three slits—has placed a limit on the accuracy of one of the laws of quantum mechanics.


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Also in this Issue

In Memory
In Memory: Remembering OSA emeritus member John B.Abbiss and OSA Fellow Franco Cerrina.

Remembering OSA emeritus member John B.Abbiss and OSA Fellow Franco Cerrina.

President's Message
President’s Message

Letters
Letters

OSA Today
OSA Today

Book Reviews
Book Reviews