Optical Harmonics Generation
hexagonal semiconductor ZnO in the photon energy region of 3.2−3.5 eV. Resonant crystallographic SHG is observed for 1s(A/B), 2s(A/B), 2p(A/B), and 1s(C) excitons and for an unidentified SHG resonance [...] ors: Cd 1-x Mn x Te diamagnetic semiconductors: ZnO, GaAs, CdTe, and Cd 1-x Mg x Te isolators: CuB 2 O 4 and NiO Experimental setup: In our experiments a tunable type-II optical parametric oscillator (OPO) [...] once, which is useful e.g. to observe domain structures. The sample temperature can be varied from 1.2 to 300 K. External magnetic fields upto 11 T are appliable in Voigt and Faraday geometry. © Dmitri …
