Optical Squeezing, Atomic Force Microscopy, Gravity Wave Detection and the SolsTiS

20 April 2012 By: gordon | Not tagged

Image 7

The marketing team enjoyed a visit to one of our longest standing and most valued customers last month. We met Professor Vincent Boyer whose Birmingham University Quantum Optics Group has been using a SolsTiS (our alignment-free, narrow linewidth Ti:S laser) for over two years in their optical squeezing apparatus. 

Birmingham-University

We were shown a complex experiment with the SolsTiS sitting at the centre of an immense breadboard of equipment which included a Rb vapour cell used to generate a four-wave-mixing process to create photon pairs. These photons are recombined to create a squeezed beam with a clean transverse intensity profile. The squeezed beam can then be used in applications such as atomic force microscopy, gravity wave detection and as an illumination source in microscopy to improve the quantum limit of optical resolution. 

The Birmingham University Quantum Optics Group selected a SolsTiS because of its low amplitude noise, low mechanical noise, thermal stability and the low maintenance, alignment free nature of the design and technology. Tuned to the Rubidium D1 line, the laser is simply switched on from cold each morning and is ready to start immediately.In particular, Professor Boyer cites the robust build quality of the SolsTiS as an important factor in eliminating mechanical (technical) noise from the experiment's delicate and complex apparatus.

It was a real treat and a privilege to see an experiment like this up close. Visit the downloads section of our website where we will shortly be posting a case study of this SolsTiS installation. You can also download a datasheet for the SolsTiS.

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Applications of mid-IR laser spectroscopy

13 April 2012 By: gordon | Not tagged

Firefly

Fugitive Emissions, Liquid Spills and the Ripeness of Pears 

We had an interesting chat over lunch at M Squared HQ  this week about the variety and range of applications of mid-IR laser spectroscopy in general and our Firefly-IR source in particular. Some of the things our customers are doing with this device are really incredible: analysing exhaust from jet engines, detection of art forgery, forensic analysis in law enforcement, liquid spill detection and analysis, leak detection in a wide range of industrial settings, drug discovery, monitoring combustion, explosives detection, and even a system for monitoring the ripening of fruit. 

tasty pear

The strength of mid-IR over near-IR lies in the stronger absorption strengths which means that a device can be used to detect and analyse lower concentrations of a target substance or else the detection can be conducted at a distance. In this way, mid-IR enables the development of systems for stand-off detection or remote detection of dangerous substances at a distance. Applications for such capability include detecting the presence of explosive substances or devices or scanning a broad landscape or large industrial scene for the presence of hydrocarbon spills, emissions or residues. Environmental safety and environmental monitoring are key applications. 

Our customers are using mid-IR laser spectroscopy in many innovative solutions across a range of sectors including defence, academic research, pharmaceutical chemistry, petrochemical processing and the food and drink industry.

Future areas of great potential include medical diagnosis through breath analysis, counterfeit pharmaceutical detection  and geographical carbon mapping.

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Merry Christmas from the Team

22 December 2011 By: gordon | Not tagged

M Squared Merry Christmas

Merry Christmas to all our friends, customers, suppliers, collaborators and partners. 2011 has been a fantastic year of growth and success for us and we hope it has also been good for you. Roll on 2012!

We hope to see some of you at Photonics West in January, but in the meantime we wish you all a happy holiday.

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Photonics West 2012: Ti:S, Ultrafast, Infrared, Terahertz and more ...

21 December 2011 By: gordon | Tagged:

SolsTiS

We're sending a big team to PW this year. If you're there, pop by and see the state-of-the-art in alignment free, low/no noise, cw Ti:S lasers. Our CEO, Dr. Graeme Malcolm will be there, along with Dr. John Nicholls (Applications), Dr. David Armstrong (Sales & Marketing, Europe), Dr. Leigh Bromley (Sales & Marketing, USA), Dr. Nils Hempler (Laser Engineer) as well as our East Coast USA representative, Dr. David Kemp, and Yvette Cooney (Events).

We are on Booth 2622.

As well as our Ti:S technology, we will also be showcasing our groundbreaking terahertz, infrared and ultrafast sources. And we will be giving away jelly beans. What's not to like? See you there.

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Invited Paper at SPIE Photonics West

15 December 2011 By: gordon | Not tagged

Photonics West


We are delighted that our colleague, Nils Hempler, has been invited by SPIE to present a paper at PW on advances in narrow-linewidth continuous wave semiconductor disk laser pumped optical parametric oscillators.

The paper presents advances in the field of mid infrared lasers suitable for spectroscopy applications. Crucially, the continuous wave operation of the optical parametric oscillator presented here, allows the development of narrower linewidth radiation compared to their pulsed counter parts. Spectroscopic applications can benefit from this as the narrow linewidth enables complex spectral features to be differentiated. Key element to this development  is the optically pumped  semiconductor disk laser, a laser format that combines the device engineerability associated with semiconductor structures with the flexibility and powerscalability of external resonators, typically only associated with solid-state lasers.

More details on the SPIE website.

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Multiphoton Imaging Abounds at SfN Neuroscience 2011

16 November 2011 By: David | Tagged:

The annual meeting of the Society for Neuroscience (SfN), often referred to simply as "Neuro", is arguably the premier academic meeting of its kind in the world for all things related to the science of the brain.  It provides a forum for researchers to present and discuss their latest work.  In addition it hosts an enormous trade show exhibition with a wide range of products from laboratory consumables to complex systems for imaging the brain.

This year's show was held in Washington D.C. in mid November and attracted a grand total of 32,000 attendees.

Light plays a key role in the study of the brain. Microscopy techniques can image deep into living samples or break the classical optical resolution limit (so called super-resolution) to give information on the finest details of the structures of the brain.  Light and neuroscience mix in the exciting field of optogenetics (Nature's method of the year 2010). This was evident in the trade show with several microscope vendors displaying their products. 

The laser plays a major part in many of these microscope products as the "engine" that, for example, generates the fluorescence that in turn generates the image.  One specific technique called multiphoton excitation (MPE) microscopy enables images of slices of the brain to be made without the need to physically slice the brain tissue.  This technique requires lasers that produce a train of short pulses of light - a technique known as mode locking. These short pulses only interact with the tissue in small volumes at the focal region of the microscope and so limit damage to the living sample. This allows multiple optical slices to made and and then combined to create a 3-dimentional picture of the structures. 

The number of microscope vendors offering such systems has certainly increased in recent years and more than ten vendors were offering such systems this year, double the number of only a few years ago.

The Sprite laser from M Squared produces the short intense pulses of light used for this technique.

Next years show is in New Orleans.

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New Headquarters

22 August 2011 By: gordon | Tagged:

venture-building

Now 5 years old, M Squared Lasers continues to double in size every twelve months and this year, inevitably, the moment arrived when we had to up sticks and relocate from our first home at Technology Terrace on the West of Scotland Science Park.  We moved in August to our new headquarters at the prestigious Venture Building (also on the Science Park) and so far, so good.

We needed a lot of extra space across the business as we continue to rapidly expand our R&D and engineering teams as well as our manufacturing and marketing capabilities: our footprint has more than doubled at 10,000 square feet (up from 4,000 previously).  The additional elbow room has already delivered benefits including dedicated space for collaborative work - we have recently hosted working visits from partners KTH (Sweden) and McQuarrie University (Australia). Our physical location and work space now fully reflect our organisational culture, providing the open and collaborative environment which is essential for taking advanced photonics tools to market.

production

In addition to being a very practical and beautiful working environment,  we are very proud of our new home's terrific green credentials: a BREEAM excellent rating (one of the first in Scotland) and an annual carbon footprint equivalent to just one return flight from Britain to the United States.

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Glasgow Science Festival Young Researcher of the Year

06 January 2011 By: gordon | Not tagged

Nils

We were delighted to learn recently that Dr. Nils Hempler, a member of our laser engineering team, was awarded the prize of Young Researcher of the Year at the Glasgow Science Festival. One very encouraging aspect of the accolade is that the judging panel was composed of school children from around the city aged between 10 and 12. Advanced engineering firms like ours have a role to play in our communities in terms of inspiring young people to an interest in science and an aspiration to higher education. Nils' great achievement in winning this prize is actually that he was able to ignite the interest of those children and make them feel excited about physics and his work on our terahertz laser systems.
 
Originally from Germany, Nils loves living and working in Scotland because of the rock climbing and the vibrant and rapidly growing photonics industry. He joined M Squared in July 2010 after completing his PhD at the Institute of Photonics. He is currently involved in the development and product management of our Firefly THz lasers, unique in the market because they can be tuned with sufficient accuracy to overcome atmospheric absorption and enable, for example, stand-off detection at distances greater than 15 metres.
You can meet him at SPIE Photonics West in January where he has been invited to present a paper on our work on narrow Linewidth, continuous Wave, SDL-pumped OPO's.

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