Two-photon polymerization of femtosecond high-order Bessel beams with aberration correction
In the femtosecond two-photon polymerization (2PP) experimental system, optical aberrations degrade the fabrication quality. To solve this issue, a multichannel interferometric wavefront sensing technique is adopted in the adaptive laser processing system with a single phase-only spatial light modulator. 2PP fabrications using corrected high-order Bessel beams with the above solution have been conducted, and high-quality microstructure arrays of microtubes with 20 µm diameter have been rapidly manufactured. The effectiveness of the proposed scheme is demonstrated by comparing the beam intensity distributions and 2PP results before and after aberration corrections.
Erse Jia, Chen Xie, Na Xiao, Francois Courvoisier, Minglie Hu. Two-photon polymerization of femtosecond high-order Bessel beams with aberration correction[J]. Chinese Optics Letters, 2023, 21(7): 071203.