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Highly Tm-doped silicate glasses and fibers were developed, which exhibit a high slope efficiency of 68.3% and a gain per unit length of greater than 2dB/cm. Single frequency fiber lasers with laser l...
Real-Time Monitoring of the Modal Content of Monolithic Large-Mode-Area Fiber Lasers
Fiber characterization Lasers fiber Fiber Bragg gratings Fabry-Perot
2010/6/9
A method for the real-time monitoring of the modal content of a monolithic LMA fiber laser is reported for the first time. It allows for the direct observation of the dynamics of transversal mode comp...
High Power Fiber Lasers and Amplifiers for Applications in Telecommunications
High Power Fiber Lasers Amplifiers Applications Telecommunications
2010/6/5
We describe the current technology and applications of watt to multi-watt fiber lasers and amplifiers in all areas of fiber optic and free space optical communications.
Large Core Single-Mode Chirally-Coupled-Core Fibers for High Power Fiber Lasers
Large Core Single-Mode Chirally-Coupled-Core Fibers High Power Fiber Lasers
2009/7/16
Novel chirally-coupled-core (CCC) fibers enabled large-core laser systems operating robustly-single-mode, independently of fiber excitation, splicing and coiling conditions. A variety of high power co...
Compact Multiwavelength Fiber Lasers in S, C and L Bands
Compact Multiwavelength Fiber Lasers L Bands
2009/7/16
We demonstrate multiwavelength CW lasers for S,C and L bands that emit more than 40 wavelengths simultaneously. We achieve a nominal channel spacing of 100 ± 10 GHz using post-fabrication correction b...
Watt-Level Bi-Doped Fiber Lasers:Breakthrough into 1300 – 1500 nm Wavelength Region
Watt-Level Bi-Doped Fiber Lasers Wavelength Region
2009/7/16
Watt-level ~20% efficiency Bi fiber lasers have been demonstrated at 1340 and 1480 nm for the first time. Optical properties of Bi-doped phosphogermanosilicate fibers depending on core composition wer...
High-Power, High-Efficiency Laser Diodes for Pumping Fiber Lasers
High power laser diode Funryu-heatsink Fiber disk laser
2009/6/12
We have been developing high-power, high-efficiency laser diodes (LD) for pumping the structural figure fiber laser. Coexisting of a high beam quality and high power is demanded of the excitation of t...
High Precision Frequency Standards Using Mode-Locked Fiber Lasers
EDFA Mode-locked fiber lasers Ultrashort pulse generation
2009/6/12
We describe an application of ultrashort fiber lasers to high precision frequency standards that enable us to measure unknown optical frequencies directly. Mode-locked lasers have a unique feature in ...