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Hi Paul, The technique I describe is for terminated fibre. For example a tool is a “Cletop” https://www.fibreoptic.com.au/product/cletopoptipop-cartridge-cleaners/ If you are talking about unterminated fibre this is a different kettle of fish and also involves lapping using grades of fibre...

Its best to follow correct fibre handling and cleaning procedures. There are dedicated fibre cleaning tools (price vary). The best alternative is using AlcoWipes and lens cleaning tissue. The method is holding the termination at 90 deg (vertical) to the cleaning pad and drag towards you...

Re: B&Wtech 473nm unit / Spectrometer Mods & Info Hey Guys, My HgAr Spectral lamp is on its way from Germany. Hopefully be able to provide some images once I receive them. So, As yet I have not conducted any adjustment of the optics other than removing baffles and the input filter. This...

Re: B&Wtech 473nm unit / Spectrometer Mods & Info Keep in mind that HeNe Lasers operate from a DC supply, for some of these simpler discharge lamps will require AC and or High-frequency “RF”. DC will cause sputtering of the electrodes and decrease it’s lifespan. Another good supply is CCFL...

Re: B&Wtech 473nm unit / Spectrometer Mods & Info Hey Civitus, Lutz Neumann has an EBay store: http://stores.ebay.com/Geisslerroehren He also has the website Hist. Glasapparate & Lehrmittel-Lutz Neumann: Home I have met him, and a very down to earth. His is an artisan in the craft.. very...

Re: B&Wtech 473nm unit / Spectrometer Mods & Info These are by Lutz Neumann, whom is the German Glass Blower I’m referring in my previous post. He makes some excellent tubes. As mentioned, 50Euro plus shipping.

Re: B&Wtech 473nm unit / Spectrometer Mods & Info I have various discharge tubes, I had two “neon sign” segments custom Made as “Ar” and “Ne” I also have some spectral tubes of Hydrogen, Helium, Neon, Argon and Xenon. There is also a German contact /contact whom is a scientific glass...

Re: B&Wtech 473nm unit / Spectrometer Mods & Info I will do... interestingly I will also try a CFL.. I gather it’s temperature rating (k) will not affect / bias the spectrum ?

Re: B&Wtech 473nm unit / Spectrometer Mods & Info Very nice... did you make any adjustment to the optics at all on this unit ?

Re: B&Wtech 473nm unit / Spectrometer Mods & Info Yes, this I Understand... To get the other peaks to come up, the 585 line was clipping unfortunately. As I understand too, this spectrometer is very sensitive to low light levels (as required for the Raman application it was used in). Ah...

Re: B&Wtech 473nm unit / Spectrometer Mods & Info The light source is from the Iphone LED, they have a broad curve with a blue peak, hence the appearance.

Re: B&Wtech 473nm unit / Spectrometer Mods & Info Hey Guys, I now have three of these Spectrometers and have been experimenting somewhat. I have removed the baffles and input filters on all three units. I have not made any further physical alignments of the optics, but have successfully...

Re: B&Wtech 473nm unit / Spectrometer Mods & Info I have used a pair of small pliers, you will marr the locking nut a little, but for the three units I have, I have successfully loosen the fibres. You could also try a little solvent such a Iso alcohol or Acetone to weaken the glue, but use...

Re: B&Wtech 473nm unit / Spectrometer Mods & Info Hello all, I recently also acquired the bio scanner module. The laser is working at over 5mW measured. I have opened the spectrometer and removed the baffles and filter. I have now re-calibrated the coefficients using lasers.. I am looking at...

Hey Jerry, Thank you :) Small world, as a number of years ago I purchased a couple of your early power meters... I may have to talk to you to get one of your newer models :)

Hey Paul, Definitely I have been looking to get a BDR-209 diode.. this looks promising... 200mW of 405nm is slow, but the results are very good due to the ability to focus it to a very small point. I also have a True measured 2.5W 445nm laser that I’m going to mount on my little 1310 CNC...

Hey HM, I am currently porting a unit to Laser GRBL (free software) You will need to use an Arduino and Motor drivers.. and upload GRBL firmware onto it As you are using stepper Motors from CD/ DVD rail, you will need the low voltage motor drivers DRV8834 as you can’t run them at 12v as...

Hey Paul, From discussions with Norseld whom manufacture the laser, the output coupler is designed to reflect only around 2% back. Generally by nature of the Copper Laser physics you would top out perhaps at 4 round trips, typically iv learnt only between 2-3 times as any more would be...

Hello Paul, The details on the CuBr Laser: Laser Tube: Sealed Quartz tube with Quartz Windows. Medium: Copper Bromide II. Wavelengths: 578.2nm (Yellow), 510.6 (Green) Output Power: 8 Watts (Typical) Max 10 Watts Power Distribution: 2.5 Watts @ 578.2nm, 5.5 Watts @ 510.6nm Beam Diameter at...

Hey Paul, I originally purchased the laser second-hand and was working at the time, the mount / gimbal at the time was already very weak I decided to power it up after a number of years the other week, there was a beam, but weak. Tweaking the adjustment on the rear did very little, but as was...