Pankaj Kadwani

TL;DR: In this paper, the relationship between the laser process conditions and the dimensions and quality of the seam was investigated by means of optical and phase-contrast microscopy, which revealed a tensile strength of greater than 80% of the bulk material strength.

TL;DR: Two different laser configurations for high-power tunable thulium fiber lasers are reported on: one is a single oscillator utilizing a volume Bragg grating for wavelength stabilization; the other is a master oscillator power amplifier system with the oscillator stabilized and made tunable by a diffraction grating.

TL;DR: This work reports on the utilization of a novel Tm:fiber laser source for mid-IR ZnGeP2 (ZGP) optical parametric oscillator (OPO) pumping that generates 27.9 kW of total mid- IR peak power in a doubly resonant oscillators configuration, which is, to the best of the knowledge, the highest ever demonstrated mid-ir peak power from a directly Tm:[fiber lasers pumped ZGP OPO.

TL;DR: Lasing of a thulium-doped polarizing photonic crystal fiber with a polarized output with a polarization extinction ratio (PER) of 15 dB and an M(2) of <1.15 is described.

TL;DR: A Tm-doped fiber laser system producing ~300 fs pulses with 1 μJ energy, corresponding to peak powers greater than 3 MW, is demonstrated, which is the highest energy yet demonstrated and the first demonstration of peak powers exceeding 1 MW from a Tm:fiber laser system.