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BEGIN:VEVENT
DTSTAMP:20261020T192948Z
LAST-MODIFIED:20170206T215556Z
DTSTART:20170208T140000Z
DTEND:20170209T050000Z
UID:event1721@bu.edu
URL:http://physics.bu.edu/internal/events/show/1721
SUMMARY: Conjugate Adaptive Optics in Biomedical Microscopy
DESCRIPTION:Featuring Jiang Li\n\nPart of the Departmental Seminars.\n\nDis
	sertation Committee:  Jerome Mertz\, Shyam Erramilli\, Pankaj Mehta\, Thoma
	s Bifano\, Lei Tian (ECE)\n\nAbstract:\n\nThe quality of biomedical microsc
	opy imaging is often degraded by sample-induced aberrations. Adaptive optic
	s (AO) is a standard approach to counter such aberrations. In common practi
	ce of AO\, an active optical correction element\, usually a deformable mirr
	or (DM)\, is usually inserted in the pupil plane of the objective lens. How
	ever\, the placement of the DM in a plane conjugate to a primary sample-ind
	uced aberration plane can be more advantageous\, especially in situations w
	here the aberrations are spatially varying and arise mainly from a dominant
	 layer. In this talk I will describe two novel implementations of sensor-ba
	sed conjugate AO\, which do not require the use of guide stars. The first i
	mplementation is applied in wide-field microscopy of transmission mode. The
	 wavefront sensing is based on a technique called partitioned aperture wave
	front sensing that we have developed earlier. The second implementation is 
	in fluorescent microscopy. The wavefront sensing strategy is based on obliq
	ue back-illumination. In Both implementations\, I will address the key chal
	lenges of developing wavefront sensors that are capable of operating with u
	ncollimated light. I will demonstrate that both implementations not only ru
	n efficiently in video-rate\, but also provide large corrected field of vie
	w.\n\n![Jiang](/resources/event-image/1721/09529b0_small)
LOCATION:PHO 901\, 8 Saint Mary's Street\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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