Optical parametric amplifiers (OPAs) exploit second-order nonlinearity to transfer energy
from a fixed frequency pump pulse to a variable frequency signal pulse, and represent an …

In the past decade, mid-infrared (MIR) few-cycle lasers have attracted remarkable research
efforts for their applications in strong-field physics, MIR spectroscopy, and bio-medical …

The generation of power-and wavelength-scalable few optical cycle pulses remains one of
the major challenges in modern laser physics. Over the past decade, the development of …

We report the generation of coherent water-window soft x-ray harmonics in a neon-filled
semi-infinite gas cell driven by a femtosecond multi-mJ mid-infrared optical parametric …

A mode-locked laser based on a Tm: CNNGG disordered crystal as an active medium and a
single-walled carbon nanotube saturable absorber is demonstrated, operating at a central …

High harmonic generation (HHG) in atomic gases is generally assumed to originate from
photoelectrons that are not perturbed by neighboring particles. In this paper, we study …

The combination of optical parametric and transient stimulated Raman amplification of
chirped pulses demonstrates a new approach for idler energy buildup in the short-wave …

We report the first passive Q-switching operation at 1.95 µm utilizing the disordered Tm:
CaLu_0. 1Gd_0. 9AlO_4 (Tm: CLGA) crystal and the hematite (α-Fe_2O_3) nanosheets as …

Simple and compact laser systems facilitate the stable and reproducible generation of high-
power few-cycle laser pulses. We demonstrate the amplification of 15 fs pulses at 2.1 µm …

We present a compact and cost-effective mJ-level femtosecond laser system operating at a
center wavelength of approximately 2.15 μm. An affordable two-stage ytterbium-doped …