Ytterbium- and chromium-doped fibre laser: from chaotic self-pulsing to passive Q-switching.

We consider an Yb-doped double-clad fiber laser in a unidirectional ring cavity containing a polarizer placed between two half-wave plates.. Depending on the orientation of the

In the case of harmonic passive mode-locking, the multipulse generation due to the quantization of the intracavity lasing radiation into individual identical solitons is

By increasing slowly the pump power up to 25 W (6.3 W intracavity at 1.55 μm), several soliton packets begin to become loose from the initial soliton crystal. Simultaneously, a

ing processes, resulting in less efficiency for the first polarization component. The value of the pump parameter A at second threshold P~~ /P~~~ is typically I-1.2 and may be

By a study of the influence of the laser parameters (cavity and amplifier medium) on the dynamics of the Er~+ doped fiber laser we have found that the different working domains of

Reflecting volume Bragg gratings with diffraction efficiency exceeding 99% were recorded directly in the laser gain elements which were made from PTR glasses doped with Nd

The reported experiments have demonstrated that spatial nonlinear self-cleaning effects, previously observed at high beam powers in GRIN MMFs, can also be obtained in a quasi

In order to obtain real high-resolution SIMS 3D analyses without being prone to the aforementioned artifacts and limitations linked to ex-situ AFM measurements, we have developed a