[BNC-grads-list] Fwd: NSAC Coffee Hour Announcement

[Sajid Choudhury]

Dear all

Just a reminder we have Coffee hour now.


---------- Forwarded message ----------
From: *Anthrop, Heather L* <hanthrop at purdue.edu>
Date: Thursday, November 3, 2016
Subject: NSAC Coffee Hour Announcement
To: "bnc-all at ecn.purdue.edu" <bnc-all at ecn.purdue.edu>


[image: Inline image 1]

We have NSAC Coffee Hour tomorrow at 3:30PM. Please join us in the Birck
Atrium at 3:30 for Honggu Choi from Department of Physics.

Speaker: Honggu Choi

Title of the Talk: "Measurement of the Abraham force density on an Optical
waveguide"

Venue: BNC Atrium

Date: 11/04/2016

Time: 3:30pm

Abstract: We would like to demonstrate an optomechanical measurement scheme
on the Abraham force density which has been regarded as a vanishing value
over time average in optical frequency. We used Adiabatic Mode
Transformation(AMT) within an optical fiber so that generated the timely
measurable Abraham force density. An optical waveguide with a central hole
was partially filled with high refractive index liquid, so propagating
light along ring-shaped core strongly interacted with liquid and exerted
pulling force upon air-liquid interface. The amount of exerted force was
quantitatively measured and its amplitude showed a good agreement with the
numerical estimation. While we suppressed the Abraham-Minkowski force
density by minimizing electric field upon boundaries, therefore the
estimated Abraham-Minkowski force density was less than 5% of the Abraham
force density.



-- 
Sajid M Choudhury. (Sent from gmail iphone)
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