We successfully realized broad-band light-emitting color center waveguides buried in LiF crystals by using femtosecond laser pulses. The characterization of the waveguides was performed by optical microscopy, photoluminescence spectra, loss measurements and near-field profiling. The experimental results show that the direct-writing fabrication process induces low-index contrast active channel waveguides: their wavelength-dependent refractive index changes, estimated from 10(-3) to 10(-4) depending on the writing conditions, allow supporting few modes at visible and near-infrared wavelengths. (C) 2014 AIP Publishing LLC.
Optical characterization of femtosecond laser induced active channel waveguides in lithium fluoride crystals / I., Chiamenti; F., Bonfigli; A. S. L., Gomes; Michelotti, Francesco; R. M., Montereali; H. J., Kalinowski. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - STAMPA. - 115:2(2014), pp. 023108-023108-7. [10.1063/1.4861636]
Optical characterization of femtosecond laser induced active channel waveguides in lithium fluoride crystals
MICHELOTTI, Francesco;
2014
Abstract
We successfully realized broad-band light-emitting color center waveguides buried in LiF crystals by using femtosecond laser pulses. The characterization of the waveguides was performed by optical microscopy, photoluminescence spectra, loss measurements and near-field profiling. The experimental results show that the direct-writing fabrication process induces low-index contrast active channel waveguides: their wavelength-dependent refractive index changes, estimated from 10(-3) to 10(-4) depending on the writing conditions, allow supporting few modes at visible and near-infrared wavelengths. (C) 2014 AIP Publishing LLC.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
