First steps in the development of next-generation chirped volume Bragg gratings by means of fs laser inscription in fused silica

Author:

Perevezentsev Evgeny A.1,Siems Malte Per2,Richter Daniel2,Mukhin Ivan B.1,Krämer Ria G.2,Gorokhov Anton I.1,Volkov Mikhail R.1ORCID,Nolte Stefan23ORCID

Affiliation:

1. Institute of Applied Physics of the Russian Academy of Sciences

2. Friedrich Schiller University Jena

3. Fraunhofer Institute for Applied Optics and Precision Engineering IOF

Abstract

The first steps towards the development and characterization of next-generation chirped volume Bragg gratings (CVBGs) by means of fs laser inscription were made. Based on the phase mask inscription technique we realized CVBGs in fused silica with a 3 × 3 mm2 aperture and a length of almost 12 mm with a chirp rate of ∼190 ps/nm around a central wavelength of 1030.5 nm. Strong mechanical stresses induced serious polarization and phase distortions of the radiation. We show a possible approach to solution of this problem. The change in the linear absorption coefficient associated with local modification of fused silica is quite small, enabling utilization of this type of gratings in high average power lasers.

Funder

Russian Foundation for Basic Research

Ministry of Science and Higher Education of the Russian Federation

Deutsche Forschungsgemeinschaft

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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