Hi Pat,
Have checked one of these up to 45mJ/mm2 without
problem on a F150A Ophir head.
Average power o/p is only about 2.3W (45mJ/mm2 at
30Hz repetition at 1.7mm2 active area fibre).
Though if anyone has a tougher meter than the 150A would
like to know - have burnt it with other things on occasions!
Gerard
-----Original Message-----
From: British Medical Laser Association [mailto:[log in to unmask]] On
Behalf Of Pat Kenny
Sent: 18 September 2008 14:07
To: [log in to unmask]
Subject: excimer
Dear list,
We will be performing a risk assessment on this new procedure here for
photoablation of unwanted intravascular tissue using a Spectranetics
CVX-300 excimer laser in our hospital. We are concerned that the energy
density of the excimer laser may exceed the damage threshold for our
Ophir detector. Here are some of the details for the laser:
Wavelength: 308 nm
Pulse width: 125-200 ns (fwhm)
Energy density: 30-60 mJ/mm2 (max)
Frequency: 40 pps (max)
Has anybody had experience with measuring the output from excimer laser
systems?
Many thanks in advance.
Kind regards,
Pat
--
Dr Patrick Kenny
Chief Physicist
Mater Misericordiae University Hospital
Eccles Street
Dublin 7
Tel: + 353 (0)1 8032625
[log in to unmask]
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