June 12012 energy

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NEWS & ANAL YSIS

16 1 TECH NEWS reseorch

you deeper inside

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^Elementary

^{quantum network}

^realized

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Superradiant laser holds bright future

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^{Plasmonic material bridges photonics,} electronics gap

28 FAsnRACK

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^Innovate responsibly to weather tough economic times

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^Convention contest shines light on Israeli startups

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GREENLIGHT

. ^Spinach

may hold key to understanding photosynthesis

. "Sweet spot" could help bring organic solar ceUsto market

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^Ultrathin solar ceUs for stretchable applications

COlUMNS 10

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PEREGRINATIONS

Laser swarm could swat asteroids away

DEPARTMENTS

PHOTO PUBLlS~

Commo 0514;ft com. TI by LoUril lonics SI crolilm, Spectro MASTER mon, P(

poid ail LAnOI chorge 1 oqemer

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BRIGHT IDEAS

"1r'n4I'PPENINGS 7':J 1 ADVERTISER INDEX

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David Bannon and Christopher Van Veen

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Headwall Photonics Inc. discuss hyperspedrbl . imaging's evolot'ingraie in the.food.onEi-^~ .

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agriculture sedor, beginning on page 44.

Design by Senior Art Diredor Lisa N.

Comstock. Images courtesy of Headwall Photonics Inc.

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Spectro lributec lro are respo"'

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PHOTONICS;The of and other forms of radiant

energy whose quanrum unit of of exrel1ds

from E!l1ergy ta detedion to communications and informatÎon

Volume 461 Issue 6 www.photonics.com

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PHOTONICS SPECTRA ISSN-0731-1230, (USPS448870) IS PU8USHEDMONTHLY8YLaunn Publishing Co.lne., Berkshire Common, PO Box4949,Pittslield,MA01202, + 1 (413)499- 0514;fox: + 1 (413) 442-3180; e-moil: photonics@photonics.

com.TlTLEreg. in US Librery 01 Congress. Copyright @ 2012 by Lounn Publishing Co. Ine.Ali nghls reserved. Copies 01Pho- lonics Spectro on microfilm ore ovailable !rom University Mi- crofilm,300 North Zeeb Rood, Ann Arbor,MI 48103.Photonics Spectre articles are indexed in the Engineering Index.POST- MASTER:Send fonm 3579 to Photanics Spectre, Berkshire Com- mon, PO Box4949,Pillslield, MA 01202. Penodicals postoge paid al Pillslield,MA, and at additional mailing olliees. CIRCU- lATION POUCY: Photonics Spectra is distributed without charge to qualilied scientisls, engineers, technicions, and man- agement personnel. Eligibilityrequesls must be reiumed with yeur business eard or organization's letterhead. Rates for oth- e" as follows: $122 per year, prepaid. Overseas postoge: $28 surface mail, $108 ainmail per year. Inquire for multiyear sub-

fEATURES

44 HYPERSPECTRAL IMAGING GErS STAMP OF APPROVAL FOR FOOD PROCESSING

by David Bannon and Christopher Van Veen, Headwall Photonics Inc.

A technology that began as a reconnaissance tool has moved into the sphere of food processing and inspection, remote sensing of agriculturalland, and plant studies.

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LEDsLOWERCOSTS, BOOST CROPS INSIDEGREENHOUSES by LynnSavage, Features Editor

Compared to incandescent lighting, LEDs offer more wavelength-specific operation, longer life, lower temperature and cost, and design flexibility.

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MODELING IMPROVES FIBER AMPLIFIERS AND LASERS by

Rüdiger

Paschotta, RP Photonics Consulting GmbH

For developing active fiber devices with the best performance for the lowest cost, numerical modeling is essential.

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FEL PULSES AND ULTRAFAST LASERS TEAM UP TO EXPLORE NEW fRONTIERS

by A/an R. Fry, SLACNational Accelerator Laboratory, and Marco Arrigoni, Coherent Inc.

Free-electron x-ray laser sources in tandem with ultrafast optical lasers

enable ground-breaking experiments in atomic, molecular and materials science.

00 INTERfEROMETER KEEPS OPTICS SHOP ON TRACK by Mike Zecchino, 4D T

echn%gy Corp.

The vibrations from a new streetcar line will not disrupt the testing and assembling of optics on the University of Arizona campus, thanks to dynamic interferometry.

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rra June 2012

are invitedto eontribute articles on the optieal, laser, liber optic, electro-optical, imaging, optoelectronics and related lields.

Communications regarding the editonal content 01 Photonics Spectra should be addressed 10 the manoging editor. Con- Iributedstotemenls and opinions expressed in Photonics Spec- tra are those 01 the eontributors - the publisher assumes no responsibilityfor them.

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PHO1OMCS)MEDIA

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