User:Andy Maloney/Notebook/Lab Notebook of Andy Maloney/2009/02/19/Optical tweezers/Diode laser
The laser is the most crucial part of an optical tweezers because it is what you use to tweeze things with. I have written a brief description of how to build your own diode laser using off the shelf OEM parts purchased from Thorlabs. The write up can be found here with a parts list here.
The controller we purchased has the capability to control a 1 Watt laser diode and the ability to control a peltier cooler. The diode I've priced out comes from PLT Technology. It's a 1 W 690 nm laser diode in a 9 mm can package. While we purchased one from this company, we haven't received it yet. I have tried to get in touch with the person in charge of our order, but they are stubbornly ignoring me. I think I would very much like to not recommend this company for laser diodes in the future. While they may be cheap, the customer service is terrible and not worth the worry to order from them again.
I have found this company. I sent a quote asking for a 690 nm, 1.2 W diode in the 9 mm package. We will see what happens.