A Nonlinear Optical Organic Crystal for Waveguiding SHG Devices: ($-$)2-($\alpha$-Methylbenzylamino)-5-Nitropyridine (MBANP)

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A nonlinear optical organic material, ($-$)2-($\alpha$-methylbenzylamino)-5-nitropyridine (MBANP), has been comprehensively investigated with the objective of application to frequency doubling of laser diodes. Its molecular hyperpolarizability is as large as that of $p$-nitroaniline. MBANP crystallizes with a highly asymmetric molecular arrangement. The largest nonlinear optical coefficient, $d_{22}$, is measured to be 60 pm/V. The corresponding figure of merit for frequency doubling at 1.064 $\mu$m is 3.5 times larger than that for $d_{33}$ of LiNbO3. Čerenkov-radiation-type, phase-matched second-harmonic generation has been demonstrated utilizing the $d_{22}$ coefficient by making use of an appropriate waveguiding structure.
INSTITUTE OF PURE AND APPLIED PHYSICSの論文
1989-09-20