Talk at City University London by Prof. Donna Strickland, Friday 13th November 2015

We will have a talk from Prof.Donna Strickland on the 13th November from 4pm to 5pm.  Refreshments will be served from 3.30pm. Details are below.

 

Long Wavelength Mid-Infrared using Two-Colour Fiber Laser Systems

 

With the help of nonlinear optics, coherent radiation is produced across the electromagnetic spectrum from X-rays to THz frequencies. However the mid-infrared radiation region, from 5 to 20 µm, known to molecular spectroscopists as the “fingerprint region” still has very few coherent sources, especially at the longer wavelengths. Short pulse systems at these wavelengths are even rarer. Two-color Chirped Pulse Amplification (CPA) laser systems can deliver two intense pulses needed to generate mid-infrared through the nonlinear process of difference frequency mixing. She will describe a two-colour Yb:fiber laser system that we are developing for Long Wavelength Mid-Infrared generation.

 

Prof. Donna Strickland received her B. Eng. Degree in Engineering Physics, from McMaster University in 1981. She graduated from the University of Rochester in 1989 with a Ph.D. in Optics. Along with her PhD supervisor, Dr. Gerard Mourou, Donna Strickland co-invented Chirped Pulse Amplification (CPA), which made it possible to amplify ultra-short pulses to unprecedented levels. From 1988 to 1991, Dr. Strickland was a research associate at the National Research Council of Canada. The following year, she was a physicist with the laser division of Lawrence Livermore National Laboratory.  In 1992, she became a member of the technical staff of Princeton’s Advanced Technology Center for Photonics and Opto-electronic Materials. Dr. Strickland joined the physics department of the University of Waterloo as an assistant professor in 1997.  At Waterloo, Dr. Strickland’s ultrafast laser group develops high-intensity laser systems for nonlinear optics investigations.  She was promoted to Associate Professor in 2002 and since 2007 has been the Associate Chair of the Department. Dr. Strickland was selected as an Alfred P. Sloan Research Fellow in 1998. She received a Premier’s Research Excellence Award in1999 and a Cottrell Scholars Award from Research Corporation in 2000. She is an OSA fellow and served as 2013 OSA president.  Currently she serves as a board member of the Canadian Association of Physicists and as an optics editor for the journal, Physics Reports.

 

Location: City University London, Centenary Building (building 5), Oakden Lecture Theatre, EC1V 0HB
Date and Time: Friday 13th November 2015. Lecture from 4 pm to 5 pm
Coffees: Convocation Suite (in basement) from 3:30 pm to 4 pm.
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). Use Entrance shown by a red arrow for Building 5 (Centenary Building) at the junction of Spencer Street and St John Street.

Thanks to Prof. Ramachandran and Prof. Agrawal for excellent talks!

We recently had the pleasure of hosting Prof. Siddharth Ramachandran (Boston University, USA) and Prof. Govind Agrawal (University of Rochester, USA) who gave excellent talks on research in optics and photonics. Below are a couple of pictures catching them in action!

Siddhart_2

Agrawal_2

Watch out for updates of our forthcoming talks on the website, and make sure you join the Local Section by clicking the “JOIN!” tab above to receive email invitations.

Talk at City University from Prof. Donald Bailey, 4th September 2015 at 4pm

Title:    FPGAs for Embedded Vision: Opportunities, Issues and Experiences

Speaker: Prof. Donald Bailey, Massey University

Synopsis:
Field Programmable Gate Arrays (FPGAs) are increasingly being used as an implementation platform for embedded vision applications. The structure of FPGAs allows them to exploit spatial and temporal parallelism inherent in many vision algorithms, enabling low power high performance systems to be developed. However, simply porting a software algorithm onto an FPGA often gives disappointing results, because most image processing algorithms have been optimised for a serial processor with monolithic memory. Instead it is necessary to transform the algorithm to efficiently exploit parallelism and the architectural possibilities available on an FPGA, often resulting in completely new algorithms. This will be illustrated with a number of example applications.

Biography:
Donald G Bailey received his B.E. in 1982, and PhD in Electrical and Electronic Engineering in 1985 from the University of Canterbury, New Zealand. From 1985 to 1987, he applied image analysis to the wool and paper industries within New Zealand. From 1987 to 1989 he was a Visiting Research Engineer at University of California at Santa Barbara. He joined Massey University in Palmerston North, New Zealand as Director of the Image Analysis Unit at the end of 1989. He has held several visiting research positions: at the University of Wales in Cardiff in 1996, at University of California at Santa Barbara in 2002, and at Imperial College London in 2008. He is currently an Associate Professor at Massey University in the School of Engineering and Advanced Technology, and is leader of the Image and Signal Processing Research Group.

 

Location: City University London, Centenary Building (building 5), Birley Lecture Theatre, EC1V 0HB
Date and Time: Friday, 4th September 2015. Lecture from 4 pm to 5 pm
Coffees: Convocation Suite (in basement) from 3:30 pm to 4 pm.
Contact: Prof. Panos Liatsis, City University London, Email: p.liatsis@city.ac.uk
Directions: Nearest Tube station: Angel, Northern Line (Bank branch). Use Entrance shown by a red arrow for Building 5 (Centenary Building) at the junction of Spencer Street and St John Street.

Talk at City University London by Prof. Govind P. Agrawal, 15th July 2015

We will have a talk from Prof. Govind P. Agrawal on the 15th July from 4pm to 5pm.  Refreshments will be served from 3.30pm. Details are below.

Space-Time Duality in Optics

Govind P. Agrawal

The Institute of Optics, University of Rochester, Rochester, NY 14627 USA
The concept of space-time duality, known since the 1960s, is attracting attention in recent years in the context of temporal imaging. In this talk I review these advances and then focus on our recent work on the temporal analog of reflection and refraction of optical pulses in a medium whose refractive index changes suddenly at a temporal boundary. Analogs of total internal reflection and temporal wave-guiding will also be presented.


Biography
Govind P. Agrawal received the B.S. degree from the University of Lucknow in 1969 and the M.S. and Ph.D. degrees from the Indian Institute of Technology, New Delhi in 1971 and 1974 respectively.
After holding positions at the Ecole Polytechnique, France, the City University of New York, and Bell Laboratories, Murray Hill, NJ, Dr. Agrawal joined in 1989 the faculty of the Institute of Optics at the University of Rochester, where he is James C. Wyant Professor of Optics. His research interests focus on optical communications, nonlinear optics, and laser physics. He is an author or coauthor of more than 400 research papers, and eight books. His books on Nonlinear Fiber Optics (Academic Press, 5th ed., 2013) and Fiber-Optic Communication Systems (Wiley, 4th ed., 2010) are used worldwide for research and teaching. Prof. Agrawal is involved with both IEEE and OSA (The Optical society) and has helped them with journal publishing and conference organization. During 2009 and 2010 he chaired the Publication Council and served on the Board of Directors of OSA. In 2012, IEEE Photonics Society honored him with its prestigious Quantum Electronics Award. He was also the recipient of the 2013 William H. Riker University Award for Excellence in Graduate Teaching.
Dr. Agrawal is a Fellow of both OSA and IEEE. He is also a Life Fellow of the Optical Society of India.

 

Location: City University London, Centenary Building (building 5), Birley Lecture Theatre, EC1V 0HB
Date and Time: Wednesday, 15th July 2015. Lecture from 4 pm to 5 pm
Coffees: Convocation Suite (in basement) from 3:30 pm to 4 pm.
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). Use Entrance shown by a red arrow for Building 5 (Centenary Building) at the junction of Spencer Street and St John Street.

Robert Woodward wins Gold in Physics and Westminster Medal at SET for BRITAIN Competition

L-R: Lord Oxburgh (President, Parliamentary and Scientific Committee); Dr Stephen Benn (Society of Biology and a Vice-President of the Parliamentary and Scientific Committee, Master of Ceremonies on the day); Andrew Miller MP (Chairman, Parliamentary and Scientific Committee); Robert Woodward (Winner of the Gold Award for Physics and of the Westminster Medal); Julian Perfect and Mrs Sue Wharton (widow of Dr Eric Wharton).

L-R: Lord Oxburgh (President, Parliamentary and Scientific Committee); Dr Stephen Benn (Society of Biology and a Vice-President of the Parliamentary and Scientific Committee, Master of Ceremonies on the day); Andrew Miller MP (Chairman, Parliamentary and Scientific Committee); Robert Woodward (Winner of the Gold Award for Physics and of the Westminster Medal); Julian Perfect and Mrs Sue Wharton (widow of Dr Eric Wharton).

 

Mr Robert Woodward, Student Representative and Committee Member of the OSA London Local Section, has won the Gold award in Physics and the overall Westminster Medal at the SET for BRITAIN poster competition held at the House of Commons. The overall aim of SET for BRITAIN is to encourage, support and promote Britain’s early-stage and early-career research scientists, engineers, technologists and mathematicians who are an essential part of continuing progress in and development of UK research and R&D.

Congratulations Rob!

More information on the winners here: http://www.setforbritain.org.uk/2015winners.asp

See Rob’s poster here: http://www.setforbritain.org.uk/psr/P/P-WOODWARD-1710-PSR.pdf

Lecture at City University from Dr Siddharth Ramachandran, 5pm 8th June 2015

Singular light in fibers: Beams that can do what Gaussians cannot
Siddharth Ramachandran
ECE Department & Photonics Center, Boston University, Boston, MA, USA
sidr@bu.edu; http://people.bu.edu/sidr; +1-617-353-9881

Gaussian beams are the ground-state solution for light in any optical system, and are the desired state for many systems such as laser cavities and optical fibers. On the other hand, spatially complex beams of light, possessing phase- or polarisation-singularities, display several intriguing phenomena such as enhanced propagation stability, the ability to self-heal, or carry orbital-angular-momentum. This talk will introduce their physics of operation, and describe the utility of generating and propagating them in fibers, for applications ranging from high-power lasers and nano-scale imaging, to scaling the capacity of optical networks.

Ramachandran_pic
Biography
Dr Siddharth Ramachandran obtained his Ph.D. in Electrical Engineering from the University of Illinois, Urbana-Champaign, in 1998. Thereafter, he joined Bell Laboratories as a Member of Technical Staff and subsequently continued with its spin-off, OFS Laboratories. After a decade in industry, Dr. Ramachandran moved back to academics in 2010, and is now a Professor in the Department of Electrical Engineering at Boston University. Prof. Ramachandran’s research focuses on the optical physics of guided waves. He has authored over 200 refereed journal and conference publications, more than 50 invited talks, plenary lectures and tutorials, 3 book-chapters, edited one book, and has been granted 37 patents. For his contributions in the field of fiber-optics, he was named a Distinguished Member of Technical Staff at OFS Labs in 2003, a fellow of the Optical Society (OSA) in 2010, and an IEEE Distinguished Lecturer for 2013-2015. He served as a topical editor for Optics Letters from 2008-2011 and associate editor for IEEE Journal of Quantum Electronics from 2011-2014, in addition to serving on numerous conference and advisory committees in the field of optics and applied physics, including as program chair for CLEO-2015.
Location: City University London, Centenary Building, Birley Lecture Theatre, EC1V 0HB
Date and Time: Monday, 8th June, 2015. Lecture from 5 pm to 6 pm
Coffees: Drysdale Building, Seating areas, from 4:30 pm to 5 pm.
Contact: Prof. B M A Rahman, City University London, Email: B.M.A.Rahman@city.ac.uk 079 29 6262 23
Nearest Tube station: Angel, Northern Line (Bank branch)

OWTNM Workshop Reception sponsored by the OSA London Local Section

The OSA was kind enough to provide funding through the OSA London Local Section for the welcome reception at the Optical Waveguide Theory and Numerical Modelling Workshop which was held at City University earlier this month.  The reception and the workshop itself were a roaring success, with attendees enjoying every minute and having some insightful and interesting conversations. I’m sure a number of fruitful collaborations will spring from this. Here are a few photos to see just how much fun it was!

OWTNM evening_E Starling-10

OWTNM evening_E Starling-23

OWTNM evening_E Starling-54

OWTNM evening_E Starling-55

Imperial Festival 2015

Returning for its fourth year and continuing to grow in popularity, Imperial Festival will be held for the first time over the two full days of Saturday 9 May and Sunday 10 May 2015.

It will be a jam-packed schedule of performances, activities and ways to get involved with the best in science and arts at Imperial. Some Festival highlights include:

  • Voyage of discovery: Take a trip to the Research Zone Marquee to meet our researchers and take part in a huge array of hands-on experiments. Send sand flying with an asteroid attack on planet Earth, do battle with Brigadier Bogey and the Snot Doctors, and make energy from light and water.
  • Meet the microbes: Head over to the new Superbug Zone to chat with the scientists behind the bacteria, and find out why antibiotic resistance is one of the world’s biggest challenges.
  • Take in some tunes: Soak up the Festival atmosphere in the Music Tent, with performances from musicians including popular geek-pop singer Jonny Berliner and the Imperial College String Ensemble.
  • Leading lights: Drop into the Light Zone to try your hand at presenting in the Performance Simulator, a portable recreation of a concert hall, and then turn yourself invisible.

See http://www.imperial.ac.uk/be-inspired/festival/ for more information!