Does the photoinitiator TPO-L work the same under the UV light and the laser, In which initiator absorb two photon .
My understanding of two photon absorbing photoinitiator systems is that lasers are usually needed for them to be practical. I should specify that I don't have any firsthand experience with TPO-L, so hopefully someone else can give you a more informed response.
Recently I have published wavelength dependent study using TPO-L which can be interesting for you (M. Schmitt; Method to analyse energy and intensity dependent photo-curing of acrylic esters in bulk, RSC Advances 2015, 5, 67284–67298. DOI: 10.1039/C5RA11427F). Complex relations between the energy and the intensity of the UV-light were observed.
I am not familiar with two-photon activation but if you want to compare the results you have to use the same energy and comparable intensities. The later one will be difficult by normal UV-light source. I suggest to perform frequency doubling of your laser.
http://pubs.rsc.org/en/Content/ArticleLanding/2015/RA/c5ra11427f#!divAbstract
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