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Registered Member #1819
Joined: Thu Nov 20 2008, 04:05PM
Location:
Posts: 137
After reading about a few of the DIY dye laser projects on the internet and on this forum, I wondered about different ways of pumping the lasing medium. If I used a laser to pump the medium, how powerful of a laser would I need? (I'm hoping that this isn't a n00b question). I'm rather sure that a laser pointer would not work.
Registered Member #99
Joined: Thu Feb 09 2006, 06:10PM
Location: florida, usa
Posts: 637
It depends on what you want to pump Dye can be pumped by an N2 laser easily. Solid state stuff uses laser diodes usually except for flash lamp pumped stuff. Input power depends on the output power you want. Efficiency is relatively low. No, a laser pointer wont work. Check out Sams Laser Faq (google it and youll find the site easily) for all the lasers pumped by other laser info you could ever need. Matt
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062
You might be able to use a Blu-ray diode (or HD-DVD) as they are not expensive. IIRC they are 405nm and around 20mW although they can be pulsed slightly higher if kept cool enough.
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
One of the tried and tested amateur nitrogen laser designs to be found on the web would surely do.
I believe that if the N2 laser be most carefully set up, it is possible to excite atmospheric nitrogen at stp, - in a word, unenclosed air - but as I haven't tried this myself, I leave it to the more experienced to advise you.
If it was my problem, and perhaps out of idleness, I'd just charge up a suitable capacitor, and discharge it through a home-made spark-flash tube, which shouldn't present a problem to anyone here.
Registered Member #1667
Joined: Sat Aug 30 2008, 09:57PM
Location:
Posts: 374
although this thread was started some weeks ago, let me comment on the nitrogen laser approach. transversally excited nitrogen Lasers are easy to build and by adding a sealed laser cavity both stable operation and high output can be achieved. There is no need for a precisely adjusted optical resonator, a first surface aluminium mirror at one end will do. With moderate capacitance, over 30 pulses / sec. can be obtained. I built a nitrogen/air laser with good ouput that works at atmosphere pressure, you may want to have a look at
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Pumping a laser with a laser
Check out Sams Laser Faq (google it and youll find the site easily) for all the lasers pumped by other laser info you could ever need.
