Publications by authors named "P Loiko"

We present the first Kerr-lens mode-locked solid-state laser based on ytterbium-doped monoclinic magnesium monotungstate as an active medium. The diode-pumped Yb:MgWO laser delivers soliton pulses as short as 32 fs at 1079 nm with a pulse repetition rate of ∼68 MHz via soft-aperture Kerr-lens mode-locking. To the best of our knowledge, these are the shortest pulses ever achieved from any ytterbium-doped tungstate crystals.

View Article and Find Full Text PDF

We report on the growth of a 2.86 at.% Ho:YGG crystal using the optical floating zone technique in an oxygen-rich environment, followed by the study of its structure, optical spectroscopy and first demonstration of continuous-wave laser operation at 2.

View Article and Find Full Text PDF

A diode-pumped Kerr-lens mode-locked laser generating 25 fs pulses at 1080 nm is demonstrated with an Yb-doped compositional mixed calcium aluminate crystal. The Yb:Ca(Gd,Y)AlO laser, which operates at a repetition rate of 65.6 MHz via soft-aperture Kerr-lens mode-locking, is pumped by a spatially single-mode, fiber-coupled diode laser.

View Article and Find Full Text PDF

We report on the first, to our knowledge, room-temperature continuous-wave laser operation of Tm,Ho-codoped barium and strontium fluoride crystals at ∼2.1 µm. The 3 at.

View Article and Find Full Text PDF

We report on a low-threshold efficient yellow Dy-fiber laser with good beam quality featuring high-brightness pumping. It employs a single-clad 0.2 mol% Dy:ZBLAN fiber pumped by two 450-nm blue GaN laser diodes.

View Article and Find Full Text PDF