Scientific Results

Spatial mode control of radiation generated by frequency difference in periodically poled crystals

Year: 2001

Authors: Giusfredi G., Mazzotti D., Cancio P., De Natale P.

Autors Affiliation: INOA, Largo Fermi 6, I-50125 Firenze, Italy; European Laboratory for Non-linear Spectroscopy (LENS); Istituto Nazionale per la Fisica della Materia (INFM)

Abstract: We demonstrate the possibility to control the spatial mode of a narrow-linewidth, continuous-wave, infrared radiation beam generated by difference frequency in a periodically poled crystal. This can be achieved by acting directly on a few experimental parameters. We show that hollow beams can be generated. A numerical routine has been developed and results agree with experimental observations, without requiring any free parameters. The relevance of these results for high-resolution spectroscopy and atom manipulation is discussed.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 87 (11)      Pages from: 113901-1  to: 113901-4

KeyWords: Computer simulation; Crystals; Emission spectroscopy; Finite difference method; Infrared radiation; Laser beams; Lithium niobate; Mathematical models; Neodymium lasers; Pumping (laser); Quantum theory; Semiconductor lasers, Difference-frequency generation; High-resolution spectroscopy; Nonlinear crystal; Periodically poled crystal, Nonlinear optics

Citations: 12
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