All-fiber high-power erbium-doped laser system generating optical pulses with a duration of 200 µs to 5 ms for fractional photo-rejuvenation.

An all-fiber high-power erbium-doped fiber laser (EDFL) source generating optical pulses from 200 µs to 5 ms with a stable rectangular envelope for fractional photo-rejuvenation is proposed and experimentally demonstrated. A master oscillator power amplifier (MOPA) configuration composed of a master oscillator, an acousto-optic modulator (AOM), and a one-stage amplifier is designed and employed in the EDFL to serve as an efficient laser system with excellent output performance. To avoid multistage amplifiers, the master oscillator generates 1.

[A new method of aponevrosis suturing after laparotomy in urgent abdominal surgery].

Objective: To improve the results of treatment of patients undergoing laparotomy by using of a new method of aponeurosis suturing after laparotomy.

Material And Methods: Training process for a new method of aponeurosis suturing after laparotomy was organized on the patented medical simulator for learning the technique of laparotomy closure. The method was introduced into surgical practice later.

Dual-band Tm-doped tellurite fiber amplifier and laser at 1.9 μm and 2.3 μm.

Ultrabroadband amplification and two-color CW lasing simultaneously near 1.9 μm and 2.3 μm in a Tm-doped tellurite fiber were demonstrated experimentally, for the first time to the best of our knowledge.

Sub-MW peak power diffraction-limited chirped-pulse monolithic Yb-doped tapered fiber amplifier.

We demonstrate a novel amplification regime in a counter-pumped, relatively long (2 meters), large mode area, highly Yb-doped and polarization-maintaining tapered fiber, which offers a high peak power directly from the amplifier. The main feature of this regime is that the amplifying signal propagates through a thin part of the tapered fiber without amplification and experiences an extremely high gain in the thick part of the tapered fiber, where most of the pump power is absorbed. In this regime, we have demonstrated 8 ps pulse amplification to a peak power of up to 0.

Widely tunable mid-infrared fiber laser source based on soliton self-frequency shift in microstructured tellurite fiber.

A turnkey fiber laser source generating high-quality pulses with a spectral sech shape and Fourier transform-limited duration of order 100 fs widely tunable in the 1.6-2.65 μm range is presented.