Fangbo Zhang

TL;DR: In this paper , air lasing naturally created inside a filament can serve as an ideal light source to probe Raman coherence excited by the femtosecond pump, producing coherent Raman signal with molecular vibrational signatures.

TL;DR: In this paper, the authors demonstrate the fabrication of macro-scale 3D glass objects of large heights up to 3.8 cm with an identical lateral and longitudinal feature size of ~20 μm.

TL;DR: In this paper, a femtosecond-laser-induced N-2(+) lasing was used to generate cascaded rotational Raman signals with more than 600 sidebands.

TL;DR: The theoretical analysis reveals that the different gain behaviors can be attributed to the vibrational distribution of populations in X2Σg+(v=0) and X2 Greek states as the N2+ ions are generated by photoionization in the laser fields, giving rise to more robust (i.e., less sensitive to the pump laser wavelength) population inversion for generating the 428 nm laser.

TL;DR: This work demonstrates the fabrication of macro-scale 3D glass objects of large heights up to ~3.8 cm with an identical lateral and longitudinal feature size of ~20 μm by revealing an unexplored regime in the interaction of ultrafast laser pulses with fused silica, which results in depth-insensitive focusing of the laser pulses inside fusedsilica.