[The influence of laser radiation of the infrared range with a wavelength of 1270 nm on mice Balb/cNude].

Background: The effects of low-intensity laser radiation (LILR) on the skin depend on the wavelength and density of the irradiation flux. Moreover, the vast receptor field of the skin facilitates the systemic influence of irradiation on the body.

Aims: The objective of the present study was to evaluate the effects of low-intensity laser irradiation (LIRI) of the infrared range with a wavelength of 1270 nm on the skin of mice Balb/cNude.

Infiltrated bunch of solitons in Bi-doped frequency-shifted feedback fibre laser operated at 1450 nm.

Mode-locked fibre laser as a dissipative system is characterized by rich forms of soliton interaction, which take place via internal energy exchange through noisy background in the presence of dispersion and nonlinearity. The result of soliton interaction was either stationary-localized or chaotically-oscillated soliton complexes, which have been shown before as stand-alone in the cavity. Here we report on a new form of solitons complex observed in Bi-doped mode-locked fibre laser operated at 1450 nm.

Role of cavity dispersion on soliton grouping in a fiber lasers.

The effect of cavity dispersion on the dynamics of bound soliton states in a fiber laser has been studied both experimentally and numerically. The mode-locking mechanism in a laser was provided by the frequency-shifted feedback to avoid the influence of soliton attraction that could be induced by saturable absorption. It was found that phase-locked bound solitons are stable for dispersion below the "threshold" value of 0.