N. I. Busleev, A. E. Rupasov, V. V. Kesaev, N. A. Smirnov, S. I. Kudryashov, R. A. Zakoldaev, “Birefringent structures with high transmittance written in fused silica by ultrashort laser pulses”, Optics and Spectroscopy, 2023, Volume 131, Issue 2,Pages <nobr>170

International Conference "Ultrafast Optical Phenomena" (UltrafastLight-2022), October 03-07, 2022, Moscow
Laser physics and laser optics

Birefringent structures with high transmittance written in fused silica by ultrashort laser pulses

N. I. Busleev^a, A. E. Rupasov^ab, V. V. Kesaev^ab, N. A. Smirnov^ab, S. I. Kudryashov^a, R. A. Zakoldaev^b

^a P. N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russia
^b St. Petersburg National Research University of Information Technologies, Mechanics and Optics, 197101 St. Petersburg, Russia

Abstract: The writing process of birefringent structures in the volume of fused silica by focused ultrashort laser pulses with wavelength in visible range and various values of pulse energy, pulse duration, repetition rate, numerical aperture and moving substrate velocity has been studied. The retardance value of fabricated structures has been measured and influence of the subsequent annealing of these structures has been studied. It was shown, that combination of writing layered structures with subsequent annealing provides structures with high homogeneity, required retardance value and high transmittance.

Keywords: direct laser writing, femtosecond laser pulses, birefringence, annealing.

Received: 08.11.2022
Revised: 29.12.2022
Accepted: 28.01.2023

DOI: 10.21883/OS.2023.02.54999.3-23