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Reflection and transmission in second harmonic generation of light in KDP crystal
Author(s) -
Bhanthumnavin V.,
Lee Chi H.
Publication year - 1990
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650030804
Subject(s) - optics , second harmonic generation , potassium titanyl phosphate , polarization (electrochemistry) , materials science , laser , crystal (programming language) , reflection (computer programming) , high harmonic generation , nonlinear optics , light beam , harmonic , phase matching , physics , chemistry , quantum mechanics , computer science , programming language
The intensity of second harmonic light beams generated in potassium dihydrogen phosphate (KDP) crystals immersed in the optically denser fluid I‐bromonaphthalene has been observed as a function of the incident angle of the fundamental beam of the neodymium‐glass laser. The laser pulses are polarized in the [110] direction with respect to the KDP crystallographic axes. We observed for the first time that there is no transmitted second harmonic light at normal incidence when the nonlinear polarization P NLS (2w) lies in the direction [001] along the crystal face normal. Furthermore, the noncollinear phase‐matching condition where the two incident fundamental beams are on the opposite side of the face normal is demonstrated. The results agree well with the theory of Bloembergen and Pershan.