Two-step absorption instead of two-photon absorption in 3D laser nanoprinting

Martin Wegener; Vincent Hahn

doi:10.1117/12.2604870

5 March 2022 Two-step absorption instead of two-photon absorption in 3D laser nanoprinting

Martin Wegener, Vincent Hahn

Proceedings Volume PC12012, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XV; PC120120G (2022) https://doi.org/10.1117/12.2604870
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Two-photon absorption (TPA) 3D laser nanoprinting typically requires femtosecond lasers, which are expensive and bulky. Here, we introduce two-step absorption (TSA) replacing TPA as the nonlinear excitation mechanism. In TSA, the virtual intermediate state in TPA is replaced by a real electronic intermediate state, allowing to use inexpensive continuous-wave lasers. Concerning degenerate TSA, we demonstrate scanning single-focus nanoprinting of state-of-the-art 3D woodpiles with rod spacings down to 300 nm and below, using about 45 µW power from a compact 405 nm semiconductor laser diode. Concerning non-degenerate TSA, we present the status of our work on light-sheet 3D laser projection printing.

Conference Presentation

Citation Download Citation

Martin Wegener and Vincent Hahn "Two-step absorption instead of two-photon absorption in 3D laser nanoprinting", Proc. SPIE PC12012, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XV, PC120120G (5 March 2022); https://doi.org/10.1117/12.2604870

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available