M. Katz et al., Refractive dispersion curve measurement of KTiOPO4 using periodically segmented waveguides and periodically poled crystals, J APPL PHYS, 90(1), 2001, pp. 53-58
We introduce a technique for measuring the refractive indices of a crystal
and apply it to measure the dispersion curve of KTiOPO4. The refractive ind
ex evaluation is based on measurement of the Bragg reflection wavelength of
periodically segmented waveguides close to cut-off conditions. The measure
ment error is found to be less than 10(-4). Second harmonic generation and
optical parametric oscillation in periodically poled KTiOPO4 enable us to e
xtend the measurement to a wide wavelength range. A room temperature Sellme
ier type equation for the dispersion curve n(z)(lambda) of flux-grown KTiOP
O4 in the entire transparency range of the crystal is determined. (C) 2001
American Institute of Physics.