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CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-4697
DTSTART:20180531T150000Z
DURATION:PT1H0M0S
DTSTAMP:20260311T042855Z
LAST-MODIFIED:20180524T134947Z
LOCATION:5310 Chamberlin
SUMMARY:Ultra-compact\, multi-functional photonics via nanofabrication
& computation \, R. G. Herb Condensed Matter Seminar\, Rajesh Menon\,
University of Utah
DESCRIPTION:Micro- and nanostructures have recently been widely applie
d to enhance the performance of optical components and systems. Struct
ures whose characteristic dimensions are greater than the wavelength o
f interest\, can effectively manipulate the scalar propertie
s of light\, while nanostructures with dimensions << can man
ipulate the vector properties of light. Computational techniques\, suc
h as nonlinear optimization\, coupled with electromagnetics modeling c
an drive the designs of novel optical and photonic components and syst
ems. When guided by manufacturing constraints\, such techniques can re
sult in highly practical\, low-cost\, ultra-compact (on the order of
x) and multi-functional integrated-photonics components\, s
uch as polarization beam-splitters\,1 wavelength splitters\,2 couplers
\,3\, waveguide bends\,4 etc. We’ll also describe a nanophotonic clo
ak that enables two devices to be placed closer together than is other
wise feasible\, leading to an increase in integration density.5 Applyi
ng these techniques at the microscale (> regime) has resulted in f
lat super-achromatic lenses\,6 planar spectrum-splitting solar concent
rators\,7 and ultra-high efficiency displays.
\n We can recogni
ze the functions enabled by optics and photonics as a form of informat
ion manipulation\, enabling highly non-intuitive forms of optical syst
ems such as photography with no lenses or microscopy with only a surgi
cal needle8 or multi-spectral imaging with a diffractive element.9
\n
\nReferences:
\n1. B. Shen\, et al.\, Nat. Photon. 9\, 37
8 (2015).
\n2. A. Y. Piggott\, et al.\, Nat. Photon. 9\, 374 (201
5).
\n3. B. Shen\, et al.\, Opt. Exp. 22(22) 27175 (2014).
\
n4. B. Shen\, et al.\, Opt. Lett. 40(24) 5750 (2015).
\n5. B. She
n\, et al.\, Nat. Commun. 7\, 13126 (2016).
\n6. P. Wang\, et al.
\, Sci. Rep. 6\, 21545 (2016).
\n7. P. Wang\, et al.\, Prog. Photo
volt. 23(9) 1073 (2015).
\n8. G. Kim\, et al.\, Appl. Phys. Lett.
106\, 261111 (2015).
\n9. P. Wang and R. Menon\, Optica\, 2(11)
933 (2015).
\n
\n
URL:https://www.physics.wisc.edu/events/?id=4697
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