Welcome

Laser Tunnel, Photo by Flavio Spedalieri

NightLase Technologies, is tailored to providing bespoke consultancy and support services within the areas of Coffee, Cosmetic Lasers, I.T. and education sectors.

Our future interests and investments lay in increasing experience in the Makerspace, STEM and Education sectors, as well as small and bespoke Laser CNC. and engraving services.

Over the years we have embarked on many projects and interests. To view our journey on our more significant projects, please visit our projects page.

 

Nightlase Technologies is a registered business, ABN: 37 503 192 144.

This website is now dedicated to documenting my personal journey through my interests, technical projects and accomplishments. To follow my creative endeavours in photography and my bespoke lamp collection, please visit my dedicated websites below;

To view my photographic images, please visit Flavio R. Spedalieri Photography.

To view my bespoke lamp collection, please visit Enigma Lamps.


Latest News

Spectra-Physics Model 127

Spectra-Physics Model 127 Laser

Following on from recent work on some vintage Spectra-Physics lasers and in particular the SP-907 laser, I had come across an ebay listing for an SP-127 Helium-Neon Laser.

At the time the Model 127 Laser was in production, it was Spectra-Physics's flagship in their large-frame Helium-Neon Laser product line. The laser's manufacturing specification is 35mW output, however, do produce significantly more.

The opportunity to secure such a laser in excellent condition and at a good price is rare, so in late September, I commenced communication with the seller with respects to shipping considerations. This would become the biggest investments made on a laser.

The main drive to procure the laser was based on confirmed output by the seller and the condition of the tube. The Laser had come out of the University of California, Berkeley.

The Laser shipped from Sacramento, California on Friday 15th October 2021 and arrived on Wednesday 20th October 2021 where it was checked, and minor adjustments made, increasing its output to 43.5mW.

An interesting realisation that this Spectra-Physics Model 127 Laser, Serial No: 35062 was manufactured in December 1990, which is in the same year and further, the exact month when I purchased and built my very first Helium-Neon laser, so it also holds a nostalgic value in quietly marking an achievement.

For more images of this laser, head over to the Spectra-Physics section.


Going To Press

EM-Field Demonstration

It has been a busy weekend and late nights.

I can confirm that my High-Frequency Solid-State Tesla Coil (HFSSTC) project will be featured as an article in coming issues of Silicon Chip Magazine to be published in 2022.

Silicon Chip Magazine is one of the only remaining and longest-running publications in Australia, covering electronics, related projects and features.

As part of preparing notes and documents on the feature, I have also taken additional images of the coil.
Please checkout our updates to the project and additional photos in the project area on HFSSTC.


Review: Elliott 356-HNL-8A Helium-Neon Laser

Elliott Model 356-HNL-8A Laser

Some 13 years ago I came across a very intriguing laser, the Elliott 356-HNL-8A Helium-Neon Laser.

The laser was manufactured between the mid-1960s and early 1970s by former company, Elliott Electronic Tubes, Ltd in London.

There is very little information on this laser, with only one other known unit remaining in the United Kingdom.

The laser features some impressive inclusions that would only be found on high-end, large scientific grade lasers, all in one small and very elegant package.

Discussions are ongoing with Sam Goldwasser on this intriguing piece.

Read more about the Elliott laser in the Laser Gallery, where a full write-up has been completed, together with new photos and detailed description of the optical configuration of the resonator.


Laser Safety

Laser Warning Symbol

Earlier this month we completed a refresh of our Laser Safety Officer accreditation, which has prompted a review of our laser safety information page.

We have now moved to a dedicated page within our resource section under Laser Safety.

In our updated page we cover laser classification (including the Australia Class 1C classification for medical lasers), and a list of the approved Australian labelling system.

We have also been busy updating various other sections within the site including the complete reformatting of our Laser Gallery Laser Gallery page and the addition of the new Library section under our Resources area, where we will build a repository of reference materials, articles and documents of interest.



Spectra-Physics 907 Laser and Site Update

Spectra-Physics SP-082 Laser Output

Over the last few days, we have been working on an old Spectra-Physics SP-907 large-frame Helium-Neon Laser.

This laser has been sitting in long-term storage since 2014, however the laser was acquired back around 2000 or so, therefore would estimate potentially near 30 years old.

We have learnt that these tubes were also "soft-sealed" even though they are very similar in every way with the more modern SP-107B / SP-127 laser that are true optically contacted Brewster windows.

Optical contacted optics (bonding) is a glueless process whereby two closely conformal surfaces are joined together, being held purely by intermolecular forces, and in the case of gas lasers, provide a gas-tight seal.

Read more of this story in our Spectra-Physics section.

We also update the site to include the section; A Look Back . . . Which looks down memory lane at some interesting milestones. The first story looks at our first encounter with Tesla Coil Technology.


Vintage Glow;- Spectra-Physics Helium-Neon Lasers

Spectra-Physics Sp-060-3388 Plasma Tube

In the last couple of weeks, we have begun a small task of firing up some of our vintage lasers including some Argon lasers and a small collection of Spectra-Physics Helium-Neon Lasers.

So, why Spectra-Physics Lasers?

It's the appreciation of the interesting and classical "Side-Arm" plasma tube that was employed in their early lasers. These have become somewhat of a collector's piece for laser collectors and a bonus if they are still lasing (even if producing <1mW output).

Check out the new section on our collection of Spectra-Physics Helium-Neon Lasers.

The ubiquitous Helium-Neon (HeNe) laser was first demonstrated by Ali Jarvan at Bell Telephone Labs in December 1960 and was the first gas laser to generate a continuous-wave laser output in the infrared part of the spectrum at 1,150nm.

Stimulated emission wavelength of 632.8nm was demonstrated in 1962 and is the most best-known and most widely used HeNe laser wavelengths in the visible spectrum.

Stimulated emission in Helium-Neon of additional lines have since been discovered; 3.39um (Infrared), 612nm (Orange), 594nm (Yellow) and 543.5nm (Green).


Gyroscopes

Super Precision Gyroscope

In our most recent update, we explore gyroscopes and their interesting behaviours and applications as well as briefly talk about the Super Precision Gyroscopes that we have in our collection that are made in the UK by Gyroscope.com.

We also have added details and information on a Sperry Ring Laser Gyroscope that we have in our collection and the precision these devices are made for use in defence, and aerospace applications.

Read more about gyroscopes and our Ring Laser Gyroscope in our new section on Gyroscopes in our resources area.


Engineering Updates...

Flavio's KS90 & Tensegrity Table

As we make some use (and sense) for the ongoing lockdown situation, one aspect is "time" (and a need) to keep the mind busy and off the constant monotonous news of the day, well at least to keep some motivation going.

As we revisit much of the website, adding and improving content, we come to update our engineering page where we feature the beautifully engineered products from Kontax Stirling Engines in the UK.

The featured image is of our Kontax KS90 low temperature differential Stirling Engine sitting on the Kontax Tensegrity table.

The KS90 engines are a superb piece of engineering, each component precision manufactured at Kontax with attention to detail and high-quality.

These engines are able run off low temperatures differences as low as 5 degrees (difference between the top plate and bottom plate) either from heat off your hand or a warm surface.

In late 2020, Kontax released their Tensegrity table, again quality of workmanship and uncompromising attention to detail right down to the packing and instructions make these products a joy to have in the collection.


Head over to our Engneering Page to read more about these products and my other engineering projects.


Sodium Lamps & Black Flames

Black Flame

Some time ago I was asked about Sodium lamps and if I knew how to wire and run them. This got me thinking and begin some research into low pressure sodium lamps (LPS).

In research, I found that LPS lamps are difficult to source, here in Australia, its almost close to impossible to source anything locally. Most references referred to supplies in the UK.

I happed to come across a seller in Russia on ebay whom was selling Russian Spectral lamps.

Soon after, I decided to purchase two Philips SOX lamps and in addition, proper control gear.

The main reason for experimenting with Sodium light; conduct the experiment to visualise "black flame".


Checkout more on this project on the Black Flame Experiment.


Exploring The World of Dye Lasers

Yellow highlighter Dye illuminated with 365nm UV

The past 12 months has been a very interesting year for a different reason or another, be it the current state of the world, or the opportunity to get stuck into some personal projects, that have been on the "must do" pile for quite some time.

Completing the project to convert an old Compak K6 coffee grinder in June 2020, then, in late August 2021, I embarked on another ambitious (and long desired) project to construct a Tesla Coil, culminating in a successfully working Tesla Coil on 25th November 2020.

Following on from the Tesla Coil Project, this finally gave me the kick to begin rebuilding of this website (which I pretty much had off-line for the best part of 12 years), and finally begin documenting my projects and the journey to completing these projects by way of the Nightlase Technologies website.

The best part of the next three months was spent head down in the computer in web development mode, which included updating and tweaking my other two websites in the process, this in itself a mammoth task.

Enter 2021, a year that should have been a more positive outlook, however as I write this (in August 2021), we are back into ever endless lockdowns.

In February 2021, I completed a High-Frequency, Solid-State Tesla Coil (HFSSTC) which produces a unique flame-like discharge, and shortly after, in April 2021, I embarked on yet another very ambitious project to build a Transversely Excited Atmospheric Nitrogen Laser capable of outputting high-energy pulses of Ultraviolet light at 337nm.

This now brings me to the actual topic at hand; making use of the TEA Nitrogen Laser to pump a Dye Laser.

Having procured some real laser dyes (expensive), I also managed to obtain some cheaper Coumarin 1 dye from a UK ebay seller which I have tested, however a more interesting test that I have conducted, using a common yellow highlighter ink dissolved in distilled water.

I am quite impressed that I was able to obtain successful lasing of this dye both using a dye laser resonant cavity as well as observing super-fluorescent lasing (lasing without mirrors).

I have subsequently made some measurements of the emission wavelengths using a spectrometer as well.


For more details and stories behind my projects, please check out my projects section.


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