This communication presents the latest designs, fabrication steps and first results of large mode area fibres with aperiodic cladding structure for high power singlemode emission. Precompensation of thermal loading and first laser emission are detailed. OCIS codes: (140.3510) Lasers, fiber; (060.2280) Fiber design and fabrication; (060.5295) Photonic crystal fibers; (140.3295) Laser beam charac...

OBJECTIVE Major side effects after endovenous laser ablation (EVLA) are pain and bruising. The aim of this study was to compare outcome and side effects after EVLA for primary varicose veins with 1470 nm diode laser using bare-tip orradial fiber. METHODS From October 2007 to December 2010, 385 patients (453 limbs) with primary varicose veins treated with 1470 nm laser were studied. Bare-tip f...

This thesis reports work on passive mode-locking of thulium-doped and erbium-doped fiber ring lasers using the technique of polarization additive pulse mode-locking (PAPM). A self-starting, mode-locked Tm+3-doped fiber laser was demonstrated with 360 to 500 fsec pulses tunable from 1.8 to 1.9 pm, the largest tuning range demonstrated from a rare-earth doped fiber. This laser operated in the sol...

A thermo-optically tunable multimode interference fiber laser is demonstrated. The laser emission can be easily tuned trough the C-band by simply changing the temperature around the multimode fiber liquid cladding of the filter. ©2011 Optical Society of America OCIS codes: (060.2410) Fibers, Erbium; (060.2310) Fiber Optics; (140.3600) Lasers Tunable; (060.4510) Optical communications

We report on a narrowband 5 W cw fiber laser incorporating a point-by-point fiber Bragg grating inscribed into the core of a Yb(3+)-doped double-clad fiber. The laser featured excellent long-term wavelength and power stability (0.3%), as well as a very narrow (15 pm) linewidth, when passive temperature stabilization of the grating was implemented.

Buried Fiber Optic Intrusion Sensor. (May 2004) Eric William Maier, B.S., Texas A&M University Chair of Advisory Committee: Dr. Henry Taylor A distributed fiber optic intrusion sensor capable of detecting intruders from the pressure of their weight on the earth’s surface was investigated in the laboratory and in field tests. The presence of an intruder above or in proximity to the buried sensor...

In recent years, the demand for the continuous wave (CW) fiber lasers of several kilowatts output power is increasing in use for metal materials processing. Fujikura group have all principal technologies required for constituting fiber lasers. We succeeded in commercializing the CW fiber laser of 4 kW output power by using those technologies. Our 4 kW CW fiber laser product has a high tolerance...

We demonstrate a high-repetition-rate soliton fiber laser that is based on highly doped anomalously dispersive erbium-doped fiber. By splicing an 11 mm single-mode fiber to the erbium-doped fiber, the thermal damage of the butt-coupled saturable Bragg reflector (SBR) is overcome. The laser generates 187 fs pulses at a repetition rate of 967 MHz with a measured long-term stability of more than 6...

Nonlinear effects are measured in passively coherently combined fiber lasers. We show that these effects can completely compensate for random fiber path length errors and promote robust lasing under many conditions. OCIS codes: (140.3298) Laser Beam Combining; (140.3410) Laser resonators

This paper presents the theoretical design of a Q-switched fiber laser, that can generate a pair of nanosecond microjoule pulses. Such a low-cost, compact, bi-pulse fiber laser would provide a very interesting alternative to classical PIV lasers.