Biomaterial Database

157 W all-fiber high-power picosecond laser. 2012

Rui Song, and Jing Hou, and Shengping Chen, and Weiqiang Yang, and Qisheng Lu

College of Optoelectronic Science and Engineering, National University of Defense Technology, Chang Sha, China.

An all-fiber high-power picosecond laser is constructed in a master oscillator power amplifier configuration. The self-constructed fiber laser seed is passively mode locked by a semiconductor saturable absorber mirror. Average output power of 157 W is obtained after three stages of amplification at a fundamental repetition rate of 60 MHz. A short length of ytterbium double-clad fiber with a high doping level is used to suppress nonlinear effects. However, a stimulated Raman scattering (SRS) effect occurs owing to the 78 kW high peak power. A self-made all-fiber repetition rate increasing system is used to octuple the repetition rate and decrease the high peak power. Average output power of 156.6 W is obtained without SRS under the same pump power at a 480 MHz repetition rate with 0.6 nm line width.

UI	MeSH Term	Description	Entries
D004867	Equipment Design	Methods and patterns of fabricating machines and related hardware.	Design, Equipment,Device Design,Medical Device Design,Design, Medical Device,Designs, Medical Device,Device Design, Medical,Device Designs, Medical,Medical Device Designs,Design, Device,Designs, Device,Designs, Equipment,Device Designs,Equipment Designs
D005336	Fiber Optic Technology	The technology of transmitting light over long distances through strands of glass or other transparent material.	Fiber Optic Technologies,Optic Technologies, Fiber,Optic Technology, Fiber,Technologies, Fiber Optic,Technology, Fiber Optic
D013057	Spectrum Analysis	The measurement of the amplitude of the components of a complex waveform throughout the frequency range of the waveform. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Spectroscopy,Analysis, Spectrum,Spectrometry
D013059	Spectrum Analysis, Raman	Analysis of the intensity of Raman scattering of monochromatic light as a function of frequency of the scattered light.	Raman Spectroscopy,Analysis, Raman Spectrum,Raman Optical Activity Spectroscopy,Raman Scattering,Raman Spectrum Analysis,Scattering, Raman,Spectroscopy, Raman
D015018	Ytterbium	An element of the rare earth family of metals. It has the atomic symbol Yb, atomic number 70, and atomic weight 173. Ytterbium has been used in lasers and as a portable x-ray source.
D054023	Lasers, Semiconductor	Lasers with a semiconductor diode as the active medium. Diode lasers transform electric energy to light using the same principle as a light-emitting diode (LED), but with internal reflection capability, thus forming a resonator where a stimulated light can reflect back and forth, allowing only a certain wavelength to be emitted. The emission of a given device is determined by the active compound used (e.g., gallium arsenide crystals doped with aluminum or indium). Typical wavelengths are 810, 1,060 and 1,300 nm. (From UMDNS, 2005)	Diode Lasers,Gallium Aluminum Arsenide Lasers,Gallium Arsenide Lasers,GaAlAs Lasers,GaAs Lasers,Lasers, GaAlAs,Lasers, GaAs,Lasers, Gallium Aluminum Arsenide,Lasers, Gallium Arsenide,Lasers, Quantum Cascade,Quantum Cascade Lasers,Semiconductor Diode Lasers,Arsenide Laser, Gallium,Arsenide Lasers, Gallium,Diode Laser,Diode Laser, Semiconductor,Diode Lasers, Semiconductor,GaAlAs Laser,GaAs Laser,Gallium Arsenide Laser,Laser, Diode,Laser, GaAlAs,Laser, GaAs,Laser, Gallium Arsenide,Laser, Quantum Cascade,Laser, Semiconductor,Laser, Semiconductor Diode,Lasers, Diode,Lasers, Semiconductor Diode,Quantum Cascade Laser,Semiconductor Diode Laser,Semiconductor Laser,Semiconductor Lasers
D055100	Optical Fibers	Thin strands of transparent material, usually glass, that are used for transmitting light waves over long distances.	Fiber Optic Cables,Cable, Fiber Optic,Cables, Fiber Optic,Fiber Optic Cable,Fiber, Optical,Fibers, Optical,Optic Cable, Fiber,Optic Cables, Fiber,Optical Fiber