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The Tutorials are free, advance registration is requested.

Programme

10.55 Introduction and Welcome
Laurence Devereux, Xmark Media
11.00 Moving optical spectroscopy into chemical and pharmaceutical manufacturing for process monitoring – an overview of the advantages and limitations of different techniques
Professor David Littlejohn, Centre for Process Analytics and Control Technology (CPACT), University of Strathclyde

Optical spectroscopy techniques including near infrared absorption, mid infrared absorption, visible absorption and fluorescence, and Raman scattering, have become increasingly important for in situ monitoring of a range of industrial processes, especially in chemicals, pharmaceuticals and food manufacturing. The molecular basis of the techniques allows quantitative as well as qualitative assessment of the status of manufacturing, which enables realtime performance monitoring and control. The imely provision of in-process measurements is important for economic, safety and environmental reasons in high value manufacturing operations.

This brief tutorial will provide an overview of the advantages and limitations of the different techniques from the perspective of in situ process measurements in the chemicals and pharmaceuticals sectors. Instrumental aspects of the techniques and opportunities for further development of process analysis systems will be mentioned, with challenges articulated concerning the desirable attributes of next generation spectral analysers.

11.30 Advanced motion control techniques for alignment and power optimization
William Land, Aerotech Table S37

We live in a world of smart technology – our homes, cars, phones, and watches are all smart and contain small digital devices connected to the internet.  With the growing demand for compact processing power and data communications, photonic device manufacturers must strive to keep throughput high and defects low.  In regards to motion control of alignment processes, this means improving upon the time to align and optimise while maintaining a high degree of repeatability.  Aerotech employs an automatic, iterative alignment routine that can detect a peak power in up to 6 degrees of freedom.  This routine, known as Fast Align, has been proven to decrease cycle times by 50% compared with raster-scan patterns over the same area.  Fast Align is able to achieve a greater than 99% power optimisation based on simulations when the peak power is known – proving that the routine is not only fast but repeatable.  The alignment routine is only as good as the mechanics and controls driving it; therefore, the system specifications pertaining to this case study will be carefully analysed.

12.00 Position sensing detector technologies and features
James Saxon, Laser Components UK Ltd, Table S2

Position Sensing Detectors (PSDs) are large area non-contact position sensors which detect either incident or diffuse light from a point source within the wavelength of 400-1100nm. PSDs function according to the Lateral Effect Photodiode principle, meaning when light strikes its active area the detector will generate multiple currents on the output terminals. These electrical currents are then used to determine the absolute spot position on the PSD. As PSDs are analogue devices consisting of a single, uniform active area, they exhibit excellent positional resolution, bandwidth, and accuracy, usually an order of magnitude higher than other non-contact position devices.

During this talk we will present the fundamental principles of PSDs along with worked examples of how they can be used to determine the position of an incident light spot in both one and two dimensions. We will also touch on common applications, as well as some unique ones too.
12.30 Scientific CMOS cameras – sensor technology and quantitative image data
James Brown, Hamamatsu, Table S21

Scientific CMOS cameras have become a mainstay technology in many imaging applications over recent years. Aside from simply generating “images”, these sensitive instruments are capable of yielding quantitative measurements of photons. Understanding the conversion from photons to image data, alongside understanding the strengths and weaknesses of CMOS sensors in comparison to other technologies – like CCD sensors – is important to be able to correctly interpret the data as a true representation of the events that have been captured.
13.00 Ultrafast optics
Chris Bridle, Manx Precision Optics, Table S10

At Manx Precision Optics Ltd (MPO) we have a wealth of experience with Pico and Femto second optics. This short talk discusses the differences between normal High Energy Laser Optics and Optics specifically designed for Ultrafast pulses.

We talk about the relationship between bandwidth and pulse duration and the challenges arising with Coating designs and materials required in order to manufacture optical components.

We have a range of off the shelf components and make custom designed Optics with leading edge Broad bandwidth, High Energy Coatings with Optimised group velocity dispersion.

We manufacture and coat in house and also control flatness after coating to ensure the best transmitted wavefront and surface flatness. We also offer Flatness after Mounting.

If you are interested in Ultrafast optics or have Optical component or beam quality concerns, please come to the talk or drop by our stand.

13.30 Recent developments in photon detection efficiency and timing performance of silicon photomultipliers
Martin Sharratt, AP Technologies Ltd, Table S8

Silicon photomultipliers are low voltage solid-state detectors with the ability to detect single photons.

SensL Technologies’ SiPMs are designed for high volume and low cost and are replacing vacuum tube PMTs, avalanche photodiodes and silicon photodiodes as the detector of choice in Medical Imaging, Hazard & Threat Detection, Automotive/ Industrial, Biophotonics and High Energy Physics applications.

The tutorial will explain the basic operating principles and performance characteristics of all SensL SiPMs, including the patented “fast-mode” readout architecture before demonstrating the huge advances in performance achieved over recent years.

SensL’s J-Series SiPMs, combine advances in silicon design and fabrication with unique waferscale Through Silicon Via (TSV) packaging technology to provide industry-leading Photon Detection Efficiency and timing performance. The presentation will conclude with the presentation of SensL’s “R-Series” of Red/NIRenhanced SiPMs which will be released later this summer.

14.00
High-speed acousto-optic scanning–based 3D two-photon imaging in-vivo
Dr Elaine Blackwood, Photonic Solutions, Table S32


One of the most active and exciting areas in neuroscience is in understand how neural pathways in the brain process and transmit information. The success of an imaging based technology is dependent on its ability to record the fast physiological signals from small neuronal structures with high spatiotemporal resolution. Laser-scanning microscopes with galvonometric scan mirrors are too slow to capture population activity on a millisecond timescale, resonant scanning offers the speed but without the spatial resolution. 

In this talk I will review the differing laser scanning methods for in-vivo imaging and then introduce a two-photon microscope that offer possibly the fastest capabilities in 3D functional imaging. This microscope incorporates a two-dimensional laser scanner with acousto-optic deflectors that enables high-speed in-vivo recording of neuronal population activity at temporal resolutions of several 10’s of kHz.  Any 3D location under the objective can be imaged with this sub-millisecond temporal resolution and on a millimeter z-dimension scanning range.

14.30

Who are the biggest commercial photonics innovators in Scotland and in which areas?
Graham McGlashan and Mike Street, Marks & Clerk, Table S30

Patents can be used to protect valuable commercial innovations; we look at photonics patent filings in Scotland to identify the most active players in the sector.

Why do people buy your products or services and how can you protect your advantage?  We will give strategies for protecting, using and exploiting your Intellectual Property, this will include some of the most FAQs and an interactive Q&A session “IP in the real world” where you have the chance to name your company and say why you think people buy your product. We will give suggestions on how you can protect your ideas and use your Intellectual Property to help pursue commercial success.

15.00 Running with sharp edges
Ian Alderton, Alrad Photonics, Table S15

Should you buy a laser diode driver that delivers extremely fast pulse rise times? It depends on your application. But very fast edges can add problems unless caution is taken. In this presentation we examine what’s involved when choosing pulsers that offer fast rise times as opposed to slow. A pulsed-current laser diode driver generates constant-current pulses for driving, testing, and characterizing laser diodes and LEDs.

Pulse rise time is a key specification, and many customers assume they need perfectly rectangular current pulses with near-zero rise times—and with no overshoot or ringing. But as we will discover, each step toward the perfect waveform is increasingly difficult and expensive than the last. In short: By understanding the costs & benefits of pulse specifications you’ll be better able to match your final requirements with a pulser optimized to that performance and only pay for what you need.

15.30 Closing remarks / End of meeting

 

Who should attend

Ideal for professional development and further education these tutorials will suit someone who is new to photonics as much as someone with knowledge of a particular technique who is wishing to improve their knowledge.

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