Second Harmonic Generation: Light Intensity & Efficiency

[brethg]

OK so i know it is possible to double the frequency of a light beam by using second harmonic generation by passing the beam through a non-linear crystal; however i am unclear as to the required intensity of light beam that is needed to achieve efficient conversation. Would it be possible to collect (a lot of) sunlight, pass it through a prism, then pass the resulting infra red light through a non-linear crystal to convert it to green light?

Also if possible: What would the required intensity be? and what would the efficiency of conversion be?

If possible please supply references

 

[brethg]

no one?

 

[brethg]

can no one shed any light on this? :-)