Title :
Observation of nonlinear spatial and temporal phenomena in a long Er3+:Cr3+:YAlO3 rod
Author :
Boothroyd, S.A. ; Okamoto, T. ; Chrostowski, J. ; Skirtach, A.
Author_Institution :
Inst. for Nat. Meas. Stand., Nat. Res. Council of Canada, Ottawa, Ont., Canada
Abstract :
We report observations from a simple experiment in which a single laser beam is incident n a highly nonlinear YAlO3:Er3+ ,Cr3+ crystal. At low intensity the transmitted beam is attenuated by transmission through the crystal but retains the Gaussian intensity profile of the incident beam. As the intensity is increased a pattern of concentric rings is evident in the transmitted far-field and at still higher intensities the transmitted beam and the beam reflected within the medium show time-dependent behaviour
Keywords :
chromium; erbium; laser beams; optical materials; optical phase conjugation; optical pumping; refractive index; yttrium compounds; Gaussian intensity profile; YAlO3:Er,Cr; beam reflection; concentric ring pattern; higher intensities; highly nonlinear YAlO3:Er3+,Cr3+ crystal; incident beam; long Er3+:Cr3+:YAlO3 rod; low intensity; nonlinear spatial phenomena; nonlinear temporal phenomena; single laser beam; time-dependent behaviour; transmitted beam; transmitted far-field; Absorption; Chromium; Erbium; Fluorescence; Laser beams; Laser mode locking; Nonlinear optics; Optical attenuators; Optical refraction; Refractive index;
Conference_Titel :
Nonlinear Optics '98: Materials, Fundamentals and Applications Topical Meeting
Conference_Location :
Kauai, HI
Print_ISBN :
0-7803-4950-4
DOI :
10.1109/NLO.1998.710259
