Femtosecond Thin-Film Laser Amplifiers Using Chirped Gratings
نویسندگان
چکیده
منابع مشابه
Near-infrared femtosecond laser crystallized poly-Si thin film transistors.
Polycrystalline silicon (poly-Si) thin film transistors (TFTs) fabricated by near-infrared femtosecond laser annealing (FLA) are demonstrated. The FLA-annealed poly-Si channels exhibit low tail-state, deep-state, and midgap-state densities of grain traps. Characteristics such as field-effect mobility, threshold voltage, and subthreshold slope for FLA-annealed poly-TFTs are comparable to those o...
متن کاملCoherent combining of two femtosecond fiber chirped pulse amplifiers
We demonstrate coherent combining of two fiber chirped pulse amplifiers seeded by a common oscillator. A phase stability of λ/20 is obtained using a fiber electro-optic phase modulator, and the recombined pulsewidth is 485 fs.
متن کاملCoherent beam combining of two femtosecond fiber chirped-pulse amplifiers.
We demonstrate coherent beam combining of two femtosecond fiber chirped-pulse amplifiers seeded by a common oscillator. Using a feedback loop based on an electro-optic phase modulator, an average power of 7.2 W before compression is obtained with a combining efficiency of 90%. The spatial and temporal qualities of the oscillator are retained, with a recombined pulse width of 325 fs. This experi...
متن کاملChirped-pulse-amplification circuits for fiber amplifiers, based on chirped-period quasi-phase-matching gratings.
A new type of compact chirped-pulse-amplification circuit for high-power amplification of femtosecond pulses in an optical fiber is demonstrated. This circuit is based on a novel pulse compressor, chirped-period quasi-phase-matching gratings in electric-field-poled lithium niobate. The main advantages of this circuit are simplicity, the small number of components, compactness, and wavelength co...
متن کاملExtreme Environment Sensing Using Femtosecond Laser-Inscribed Fiber Bragg Gratings
The femtosecond laser-induced fiber Bragg grating is an effective sensor technology that can be deployed in harsh environments. Depending on the optical fiber chosen and the inscription parameters that are used, devices suitable for high temperature, pressure, ionizing radiation and strain sensor applications are possible. Such devices are appropriate for aerospace or energy production applicat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ACS Omega
سال: 2019
ISSN: 2470-1343,2470-1343
DOI: 10.1021/acsomega.9b00232