I think we can safely say that you need a 36 watt UV lamp preferably the NSI one to cure this gel.
I am not sure what you mean by a desk lamp, hopefully you are meaning a UV Lamp that sits on your desk for a client to place her hand in, and has usually 4 x 9watt UV bulbs within it to cure Gel products.
Here in the UK though when we say desk lamp we mean the lamp that sits on our desk to give us better light to see with lol.