OSA Ambassador A/Prof. Michelle Sander to talk at Imperial College, 18/12/2017

On Monday 18th December A/Prof. Michelle Sander will be visiting Imperial College London to give a seminar titled Dual-output ultrafast thulium fiber
laser and applications in mid-infrared
vibrational photothermal imaging
. The talk will take place at 2pm in Room 630 of Blackett Laboratory, Prince Consort Road, SW7 2AZ.

BIOGRAPHY:

Michelle Sander is an assistant professor in the Department of Electrical and Computer Engineering at Boston University and an affiliated faculty with the Materials Science and Engineering Division. She is a member of the BU Photonics Center, the BU-BUMC Cancer Center, the Center for Neurophotonics and the BU Nanotechnology Center. She received her PhD in Electrical Engineering from the Massachusetts Institute of Technology in the Optics and Quantum Electronics Group. Previously, she graduated with a German Diploma degree in Electrical Engineering and a Master of Science degree from the Georgia Institute of Technology. Her research interests include the development of innovative novel ultrafast fiber lasers, characterization of femtosecond dynamics, and applications to vibrational spectroscopy and biomedical imaging. A/Prof. Sander received an AFOSR Young Investigator Award, is the recipient of two BU Dean’s Catalyst Awards and the BU Nanotechnology Innovation Center Award. In 2017, she serves as an OSA Ambassador.

ABSTRACT:

Dual-output ultrafast lasers pave a promising pathway towards compact single sources for high precision metrology and dual comb spectroscopy. Based on vector soliton dynamics, a compact fiber laser with co-generated, orthogonally polarized interlaced pulses will be presented. Further, self-organized multiple pulsing operation will be discussed in turn-key, compact thulium fiber lasers.  With operation the eye-safe wavelength region from 1.7 µm to 2.2 µm, these femtosecond thulium fiber lasers are attractive for applications in gas/environmental sensing, biomedical diagnosis and surgery and nonlinear conversion.

The second part of this talk will focus on mid-infrared vibrational photothermal spectroscopy in the fingerprint region (at wavelengths ~5μm and longer), which can reveal characteristic details about molecular compounds with high sensitivity and specificity. A novel nonlinear photothermal operating regime with characteristic spectral narrowing, bifurcation and strong enhancements will be presented as a new pathway for material characterization. This technique can offer sub-diffraction limited imaging resolution and can be applied to analyze the secondary protein conformations in biomedical tissue.

London Plasmonics Forum 2017 – 14th June 2017

 

The 3rd Annual London Plasmonics Forum will be held on the 14th of June 2017 at King’s College London.  It is open to all researchers and companies in London, UK, Europe and worldwide. Last year’s London Plasmonic Forum was a sell-out event with over 100 participants. This year young researchers (post-docs and PhD students) can apply to present either a poster or give a talk.  

 

The keynote speaker will be James Dimmock from Sharp Electronics and his talk will be entitled “Thin metal layers for photodetectors and solar cells”.  James is a lead researcher in semiconductor physics at Sharp Laboratories of Europe, where he has spent over 8 years investigating next generation optoelectronic technology. In 2014 he demonstrated a hot carrier photovoltaic cell in a semiconductor structure, based on resonant tunnelling of photogenerated hot electrons. He has recently completed an industrial fellowship at Imperial College London, investigating hot carrier photovoltaic cells with thin film metallic absorbers and their extension for use as photodetectors.

 

Registration is free but please book using the link below for logistical purposes. 

https://www.eventbrite.co.uk/e/london-plasmonics-forum-2017-tickets-33698400824

 

London Local Section at the Capital Physics Teacher Conference

On the 28th June 2016 Dr Alex Clark and Dr Robert Woodward from the OSA London Local Section joined forces with Mr Henry Hammond, Director of Physics at Alexandra Park School, at the Capital Physics Annual Conference to deliver a Workshop on Optics and Photonics.

image

The aim of this was to train teachers in the use of optics and photonics kits in the classroom, including the OSA Explore Optics Kits. There were many demonstrations from paraxial ray cloaking to Pepper’s Ghost, building a spectrometer and measuring the wavelength of a laser. At the end of the workshop the teachers were all enthusiastic to try out the kits with each of them taking one back to their school.

If other teachers want to get involved then please join the local section using the “Join!” tab above.

Talk from Dr Jas Sanhera – 11.30am 23rd June – City University

Tomorrow we will have a talk from Dr Jas Sanhera from the US Naval Research Labs in Washington DC.

The Naval Research Laboratory in Washington, DC possess facilities for the synthesis of ultrahigh purity chemicals and their conversion into undoped and rare earth/transition metal ion doped glasses, glass ceramics, ceramics, and crystals that can be monolithic bulk optics, thin films, and optical fibers using selective processes such as melting, casting, sintering, sputtering, evaporation, extrusion, and fiber drawing, respectively. The linear and nonlinear optical properties of these materials are then exploited in many applications including laser power delivery, laser power generation, fluorescent sources, chem/bio sensing, and flexible photovoltaics. This talk will focus on the many different optical materials and their applications.

Hope to see some of you there!

Location: City University London, Main Building (Marked 3 below), Northampton Suite B, Level 4, EC1V 0HB
Date and Time: Thursday 23rd June 2016. Lecture from 11.30am to 12.30pm
Coffees: From 11.00am to 11.30am.
Contact: Prof. B M A Rahman, City University London, Email: B.M.A.Rahman@city.ac.uk
Directions: Nearest Tube station: Angel, Northern Line (Bank branch).