UV Picosecond-Laser Induced Bulk Modifications and Luminescence in Single-Crystal Diamond

I.I. Vlasov, Khomich, A.A.; Natural Sciences Center, Prokhorov General Physics Institute, Moscow 119991, Russia, Pimenov, S.M.; Natural Sciences Center, Prokhorov General Physics Institute, Moscow 119991, Russia, Zavedeev, E.V.; Natural Sciences Center, Prokhorov General Physics Institute, Moscow 119991, Russia, Jäggi, B.; Bern University Of Applied Sciences, Engineering & Information Technology, Burgdorf CH-3400, Switzerland, Neuenschwander, B.; Bern University Of Applied Sciences, Engineering & Information Technology, Burgdorf CH-3400, Switzerland & Romano, V.; Bern University Of Applied Sciences, Engineering & Information Technology, Burgdorf CH-3400, Switzerland
Bulk laser-graphitized microstructures have been fabricated in type IIa single-crystal 1.2-mm-thick diamond plates by UV laser irradiation with 10-ps pulses at λ=355 nm wavelength. It is found that the crystallographic-plane-dependent character of structural modifications in the bulk is influenced by the laser wavelength and the direction of the laser beam incidence relative to a given crystallographic direction (<100> or <110>) in the diamond plates. High-order Stokes Raman lasing is observed during UV laser irradiation and...
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