circularized laser diode for laser tweezer : Power Technology, Crystalaser?

I am currently using a Melles-Griot laser diode (830 nm, 100 mW) module
for my laser tweezer. I like the module because it includes an
anamorphic prism pair (I think) such that the beam is circularized. (I
am not a big fan of M-G in genereal but like their electro-optics
division in Boulder) I am building a new tweezer and have been doing
some comparison and have come across similar products by Crystalaser
(810 nm, 150 mW) and Power Technologies (830 nm, 120 mW, 980 nm, 250
mW!!). I like these because they are higher power (espcailly the 980
nm Power Tech one) and the price and delivery time are both half the
Melles-Griot's (Power Tech's 830 nm is 1/4 the price). Has anyone had
any bad experience with the products or tech support of Power
Technologies and Crystalaser. (For comparison, Scott Crawford of MG
Electro-Optics was very helpful/responsive when I ran into lots of
problems when I first purchased my MG diode module in June 2001)

Thanks for your input!

Alfred

.

Relevant Pages