10 Photonics Spectra June 2016 www.photonics.com
Though the father-son duo of Hans and Zacharias Janssen is widely credited
with developing the first microscope in the late 16th century, it was the English scholar
Robert Hooke who inspired widespread public interest in the new science of microscopy.
His seminal work, “Micrographia,” published in 1665, included never-before-seen
illustrations of magnified insects and plants, just as he saw them from his microscope.
“By the help of microscopes, there is nothing so small as to escape our inquiry;
hence, there is a new visable world discovered to the understanding,” he wrote.
As in Hooke’s day, microscopy continues to open up new worlds of understanding.
Senior editor Justine Murphy spoke with three luminaries in the field: Aydogan Ozcan,
Ph.D., of UCLA; David K. Welsh, M.D., Ph.D., of UC San Diego; and Nestor J. Zaluzec
of the Argonne National Laboratory. They shared their insights into the latest superresolution and cryomicroscopy techniques and more in “Illuminating Microscopy
Growth and Demand” on page 52.
Speaking of illumination, lighting sources have changed significantly from the rudimentary oil lamps used in Hooke’s day. Contributing editor Marie Freebody’s “Lighting
up Microscopes: Advances and Emerging Sources” on page 30 examines the increasing
popularity of LED light sources, especially for bright-field transmitted light techniques,
and the use of optically pumped semiconductor lasers and laser diodes for fluorescent
lifetime imaging microscopy (FLIM).
We shift from the microscopic world to the vast expanse of the universe, where floated
borosilicate glass is proving critical in the operation of the Hobby-Eberly Telescope.
Schott North America’s Tina Gallo hints at things to come in “Specialized Optical
Mirrors Set to Unlock the Universe’s Darkest Mysteries,” on page 41.
We round out the issue with a closer look at how the development of better sensors,
more powerful processors and sophisticated algorithms, along with LEDs, are benefiting
machine vision applications, in Hank Hogan’s “For Vision Systems, Lighting and
Other Advances Up Capabilities and Cut Costs” on page 36.
Finally, the presence of increasingly fast and powerful ultrashort pulse laser systems
on the market presents a new challenge: avoiding the accumulation of too many pulses
in one spot. Florian Harth, Thomas Herrmann, Bernhard Henrich and Johannes A.
L‘huillier of the Photonik-Zentrum Kaiserslautern eV and Research Center Optimas
reveal how users of these systems can achieve a dynamically and synchronously
adaptable pulse repetition rate in the MHz range — critical to achieving higher output.
Be sure to read, “Ultrashort Pulse Laser Micromachining Surpasses Previous
Limitations” on page 46.
Enjoy the issue!
• • • • • • • •
new worlds into focus
Editorial Advisory Board
Dr. Robert R. Alfano
City College of New York
Power Technology Inc.
Dr. Timothy Day
Dr. Turan Erdogan
Idex Optics & Photonics
Dr. Stephen D. Fantone
Dr. Michael Houk
Bristol Instruments Inc.
Dr. Kenneth J. Kaufmann
Shirat Enterprises Ltd., Israel
Dr. William Plummer
W TP Optics
Dr. Ryszard S. Romaniuk
Warsaw University of Technology, Poland
Dr. Steve Sheng
Telesis Technologies Inc.
William H. Shiner
IPG Photonics Corp.
John M. Stack
Dr. Albert J.P. Theuwissen
Harvest Imaging/Delft University
of Technology, Belgium
National Instruments Corp.
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