TY - GEN

T1 - 2D and 3D laser writing for integrated optical elements creation

AU - Povolotskiy, A.

AU - Shimko, A.

AU - Manshina, A.

AU - Bivona, S.

AU - Ferrante, G.

N1 - Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2005

Y1 - 2005

N2 - We report on laser writing of 2D and 3D structures based on laser induced structural modifications. In our experiment, bulk glasses of chalcogenide systems Ga-Ge-S, As2S3 and Ga-Ge-S thin films have been used. Photo-structuring of the bulk glasses has been obtained by using low energy (< 2.5 nJ) fs laser pulses with wavelength of 815 nm, while the films have been photo-structured by using both fs and nitrogen lasers. Spherical structures in the bulk glasses have been found whose geometrical form and size depend on both the sample translation velocity and the laser pulse energy. With increasing the sample translation velocity up to 3cm/s, and for values of the average laser power of 150 mW, the spherical structures disappear and flat waveguides are created. The manufacturing laser threshold for bulk chalcogenide glasses was found to be about 2 · 1010 W/cm2. For the case of films irradiated by the nitrogen laser a blue shift of the optical absorption edge and a decrease of the refractive index were measured. The considerable and controllable change of the optical parameters allowed us to create waveguides showing the possibility of realizing integrated optical circuits with high density of elements.

AB - We report on laser writing of 2D and 3D structures based on laser induced structural modifications. In our experiment, bulk glasses of chalcogenide systems Ga-Ge-S, As2S3 and Ga-Ge-S thin films have been used. Photo-structuring of the bulk glasses has been obtained by using low energy (< 2.5 nJ) fs laser pulses with wavelength of 815 nm, while the films have been photo-structured by using both fs and nitrogen lasers. Spherical structures in the bulk glasses have been found whose geometrical form and size depend on both the sample translation velocity and the laser pulse energy. With increasing the sample translation velocity up to 3cm/s, and for values of the average laser power of 150 mW, the spherical structures disappear and flat waveguides are created. The manufacturing laser threshold for bulk chalcogenide glasses was found to be about 2 · 1010 W/cm2. For the case of films irradiated by the nitrogen laser a blue shift of the optical absorption edge and a decrease of the refractive index were measured. The considerable and controllable change of the optical parameters allowed us to create waveguides showing the possibility of realizing integrated optical circuits with high density of elements.

UR - http://www.scopus.com/inward/record.url?scp=33745007615&partnerID=8YFLogxK

U2 - 10.1109/WFOPC.2005.1462107

DO - 10.1109/WFOPC.2005.1462107

M3 - Conference contribution

SN - 0780389492

SN - 9780780389496

T3 - Proceedings of WFOPC2005 - 4th IEEE/LEOS Workshop on Fibres and Optical Passive Components

SP - 98

EP - 102

BT - Proceedings of WFOPC2005 - 4th IEEE/LEOS Workshop on Fibres and Optical Passive Components

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - WFOPC2005 - 4th IEEE/LEOS Workshop on Fibres and Optical Passive Components

Y2 - 22 June 2005 through 24 June 2005

ER -