The cascade conical diffraction phenomenon from up to four crystals is experimentally demonstrated. Less than one year ago M.V. Berry predicted that the focus pattern of conical diffraction from an N-crystal cascade is the superposition of 2 (N-1) single-crystal concentric conical diffraction patterns (rings), whose ring radii are a combination of those from the individual crystals in cascade. The experimental observations presented here are in full agreement with these theoretical predictions.
AB -The cascade conical diffraction phenomenon from up to four crystals is experimentally demonstrated. Less than one year ago M.V. Berry predicted that the focus pattern of conical diffraction from an N-crystal cascade is the superposition of 2 (N-1) single-crystal concentric conical diffraction patterns (rings), whose ring radii are a combination of those from the individual crystals in cascade. The experimental observations presented here are in full agreement with these theoretical predictions.
KW - REFRACTION KW - LASER KW - CRYSTALS U2 - 10.1007/s00340-011-4544-x DO - 10.1007/s00340-011-4544-x M1 - Article JO - Applied Physics B: Lasers and Optics JF - Applied Physics B: Lasers and Optics SN - 0946-2171 IS - 2 VL - 103 SP - 281 EP - 283 ER -