High-harmonic generation using OAM

In the October 8th edition of PRL we report on the generation of high-harmonic beams of light that carry controlled orbital angular momentum.

Here we show that orbital angular momentum is conserved in the high-harmonic generation process.  We generate beams of light with orbital angular momentum up to l = 15.  

This was work from Genevieve's master's thesis when she was in Ottawa.  Thanks to Eliot for the picture.