Title :
Nonlinear-nonreciprocal spectroscopy of antiferromagnets
Author_Institution :
Inst. fur Phys., Dortmund Univ., Germany
Abstract :
Summary form only given. Nonreciprocal effects are caused by breaking of time-inversion symmetry. Nonlinear spectroscopy is an excellent tool to study nonreciprocal effects as, for example, antiferromagnetic (afm) ordering, as was recently shown for Cr/sub 2/O/sub 3/. The sign of the nonlinear optical susceptibility tensor can be measured by second harmonic generation (SHG) if there is at the same time a SH-contribution from a time invariant susceptibility tensor.
Keywords :
antiferromagnetic materials; chromium compounds; nonlinear optical susceptibility; optical harmonic generation; spontaneous symmetry breaking; tensors; Cr/sub 2/O/sub 3/; SH-contribution; SHG; antiferromagnetic ordering; antiferromagnets; nonlinear optical susceptibility tensor; nonlinear spectroscopy; nonlinear-nonreciprocal spectroscopy; nonreciprocal effects; second harmonic generation; time invariant susceptibility tensor; time-inversion symmetry; Antiferromagnetic materials; Crystallization; Ferroelectric materials; Polarization; Pulse measurements; Pump lasers; Spectroscopy; Surfaces; Temperature; Tensile stress;
Conference_Titel :
Quantum Electronics Conference, 1998. IQEC 98. Technical Digest. Summaries of papers presented at the International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-541-2
DOI :
10.1109/IQEC.1998.680113
