Laser Congress

03 October 2021 – 07 October 2021
Optica Virtual Event - Eastern Daylight/Summer Time (UTC - 04:00)

Brittle Materials Processing II (LW4A)

Presider: Dirk Muller, Coherent Inc
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14:00 - 14:30
(UTC - 04:00)

Laser Processing of Glass Materials With CO and CO2 Beam Sources (LW4A.1)
Presenter: Katharina Rettschlag, Laser Zentrum Hannover e.V.

Due to excellent absorption properties of glass in wavelength ranges of a few micrometers, CO and CO2 lasers are widely used in glass processing, for example in welding, glass deposition or glass additive manufacturing.

Authors:Katharina Rettschlag, Laser Zentrum Hannover e.V.

14:30 - 15:00
(UTC - 04:00)

Bulk Processing of Silicon Using IR Ultrashort Laser Pulses (LW4A.2)
Presenter: Stefan Nolte, Friedrich-Schiller-Universität Jena

We discuss bulk processing of silicon using infrared ultrashort laser pulses. In contrast to dielectrics, nonlinear effects are significantly more pronounced and have to be considered. Applications range from waveguide writing to dicing and welding.

Authors:Stefan Nolte, Friedrich-Schiller-Universität Jena

15:00 - 15:30
(UTC - 04:00)

Femtosecond Laser Welding of Nd:YAG Crystals for High-Power Lasers Applications (LW4A.3)
Presenter: Tatiana Lipateva, Mendeleev University of Chemical Technology

High-resolution transmission electron microscopy revealed that the femtosecond laser-assisted bonding between two Nd:YAG crystals is presented by an amorphous nanoperiodic structure. The joint withstand sharp heating up to 400°C degrees in an electric oven.

Authors:Tatiana Lipateva, Mendeleev University of Chemical Technology / Andrey Okhrimchuk, Mendeleev University of Chemical Technology / Alexey Lipatiev, Mendeleev University of Chemical Technology / Igor Karateev, National Research Center Kurchatov Institute / Sergey Lotarev, Mendeleev University of Chemical Technology / Sergey Fedotov, Mendeleev University of Chemical Technology / Alexander Shestakov, Polyus Research Institute of M.F.Stelmach / Vladimir Sigaev, Mendeleev University of Chemical Technology

  Paper

15:30 - 16:00
(UTC - 04:00)

3D Monolithic Glass Fabrication Process for Miiniaturised Opto-Mechanical Systems (LW4A.4)
Presenter: Andrea Lovera, FEMTOPRINT

A glass miniaturized optical particulate matter sensor for air quality monitoring was developed with the FEMTOPRINT® technology. A scattering pattern of an illuminated particles flow was detected by freeform refractive surfaces with optical grade quality.

Authors:Andrea Lovera, FEMTOPRINT