The Experts below are selected from a list of 4353 Experts worldwide ranked by ideXlab platform
Harald Giessen - One of the best experts on this subject based on the ideXlab platform.
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High-power high-repetition-rate mid-IR femtosecond laser sources for FTIR spectroscopy applications
2013 38th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2013Co-Authors: Robin Hegenbarth, Andy Steinmann, Tobias Steinle, Joachim Krauth, Stefan Mastel, Harald GiessenAbstract:We present broadband difference frequency generation into the mid-infrared based on a femtosecond dual-Signal-Wavelength optical parametric oscillator for near-field microscopy applications as well as a high-repetition-rate optical parametric amplifier for FTIR spectroscopy applications.
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milliwatt level mid infrared 10 5 16 5 μm difference frequency generation with a femtosecond dual Signal Wavelength optical parametric oscillator
Optics Letters, 2012Co-Authors: Robin Hegenbarth, Andy Steinmann, Sergey Yu. Sarkisov, Harald GiessenAbstract:We demonstrate the generation of mid-infrared radiation using a femtosecond dual-Signal-Wavelength optical parametric oscillator and difference frequency generation in an extracavity gallium selenide or silver gallium diselenide crystal. This system generates up to 4.3 mW of average mid-infrared power. Its spectra can be tuned to between 10.5 μm and 16.5 μm Wavelength (952 cm−1–606 cm−1) with more than 50 cm−1 spectral bandwidth. We demonstrate that the power and spectra of this system are temporally very stable.
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Milliwatt-level mid-infrared (10.5–16.5 μm) difference frequency generation with a femtosecond dual-Signal-Wavelength optical parametric oscillator
Optics Letters, 2012Co-Authors: Robin Hegenbarth, Andy Steinmann, Sergey Yu. Sarkisov, Harald GiessenAbstract:We demonstrate the generation of mid-infrared radiation using a femtosecond dual-Signal-Wavelength optical parametric oscillator and difference frequency generation in an extracavity gallium selenide or silver gallium diselenide crystal. This system generates up to 4.3 mW of average mid-infrared power. Its spectra can be tuned to between 10.5 μm and 16.5 μm Wavelength (952 cm−1–606 cm−1) with more than 50 cm−1 spectral bandwidth. We demonstrate that the power and spectra of this system are temporally very stable.
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Milliwatt-level mid-infrared difference frequency generation with a femtosecond dual-Signal-Wavelength optical parametric oscillator
2012 Conference on Lasers and Electro-Optics (CLEO), 2012Co-Authors: Robin Hegenbarth, Andy Steinmann, György Tóth, János Hebling, Harald GiessenAbstract:We report on mid-infrared difference frequency generation with a dual-Signal-Wavelength femtosecond optical parametric oscillator. We achieved up to 1.2 mW average power at 42 MHz at Wavelengths tunable between 11 and 18 μm.
T. Sakamoto - One of the best experts on this subject based on the ideXlab platform.
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Recirculating loop experiment for 1580-nm-band large-scale WDM network using dispersion-shifted fiber
IEEE Photonics Technology Letters, 1998Co-Authors: T. Sakamoto, M. Yamada, M. Fukui, M. Jinno, J. Kani, S. Aisawa, K. OguchiAbstract:Feasibility of a 1580-mm-band large-scale Wavelength-division multiplexing (WDM) network employing add-drop. Multiplexers (ADMs) is shown from the results of a recirculating loop experiment. The limitation due to four-wave mixing (FWM) are avoided by shifting the Signal Wavelength band from the conventional 1550-1580-nm band, which enables us to construct a 1200-km large-scale network with the large-node spacing of 120 km over dispersion-shifted fiber.
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First demonstration of 1580 nm-band large scale WDM ring network over dispersion-shifted fiber employing optical add-drop multiplexers
Integrated Optics and Optical Fibre Communications 11th International Conference on and 23rd European Conference on Optical Communications (Conf. Publ, 1997Co-Authors: T. Sakamoto, M. Yamada, M. Fukui, M. Jinno, J. Kani, S. Aisawa, K. OguchiAbstract:Large scale 1580 nm-band WDM network over dispersion-shifted fiber employing add-drop multiplexers is demonstrated for the first time. By shifting the Signal Wavelength region to 1580 nm, the limitation due to four wave mixing can be avoided, which enables us to construct a 1200 km large scale network with the large node spacing of 120 km.
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1.4-μm-band gain characteristics of a Tm-Ho-doped ZBLYAN fiber amplifier pumped in the 0.8-μm band
IEEE Photonics Technology Letters, 1995Co-Authors: T. Sakamoto, M. Shimizu, T. Kanamori, Y. Terunuma, Y. Ohishi, M. Yamada, S. SudoAbstract:The gain characteristics of a 1.4-μm-band thulium-holmium-doped ZBLYAN fiber amplifier are described. Signal gain is obtained over the whole 1.4-μm band for a pump power level of 73.5 mW. A maximum Signal gain of 18 dB is achieved at a Signal Wavelength of 6.46 μm for a pump power of 150 mW at 0.79 μm. The noise figure is 5.6 dB in the Signal Wavelength region from 1.45-1.50 μm. From a comparison of the gain characteristics of thulium-holmium-doped ZBLYAN fibers and thulium-doped ZBLYAN fibers, it is proved that holmium ions play an effective role in increasing the gain and widening the gain spectrum.
T. Makino - One of the best experts on this subject based on the ideXlab platform.
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All-optical phase modulation in a traveling wave semiconductor laser amplifier
IEEE Photonics Technology Letters, 1994Co-Authors: Q. Jiang, M. Kavehrad, T. MakinoAbstract:A novel all-optical phase modulation and Wavelength conversion has been demonstrated in a traveling wave semiconductor laser amplifier. Even though the optical gain modulation caused by the saturation effect in a traveling wave semiconductor laser amplifier is sensitive to the Signal Wavelength, the optically controlled phase modulation is relatively independent of the Signal Wavelength.
K. Oguchi - One of the best experts on this subject based on the ideXlab platform.
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Recirculating loop experiment for 1580-nm-band large-scale WDM network using dispersion-shifted fiber
IEEE Photonics Technology Letters, 1998Co-Authors: T. Sakamoto, M. Yamada, M. Fukui, M. Jinno, J. Kani, S. Aisawa, K. OguchiAbstract:Feasibility of a 1580-mm-band large-scale Wavelength-division multiplexing (WDM) network employing add-drop. Multiplexers (ADMs) is shown from the results of a recirculating loop experiment. The limitation due to four-wave mixing (FWM) are avoided by shifting the Signal Wavelength band from the conventional 1550-1580-nm band, which enables us to construct a 1200-km large-scale network with the large-node spacing of 120 km over dispersion-shifted fiber.
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First demonstration of 1580 nm-band large scale WDM ring network over dispersion-shifted fiber employing optical add-drop multiplexers
Integrated Optics and Optical Fibre Communications 11th International Conference on and 23rd European Conference on Optical Communications (Conf. Publ, 1997Co-Authors: T. Sakamoto, M. Yamada, M. Fukui, M. Jinno, J. Kani, S. Aisawa, K. OguchiAbstract:Large scale 1580 nm-band WDM network over dispersion-shifted fiber employing add-drop multiplexers is demonstrated for the first time. By shifting the Signal Wavelength region to 1580 nm, the limitation due to four wave mixing can be avoided, which enables us to construct a 1200 km large scale network with the large node spacing of 120 km.
E Isenstein - One of the best experts on this subject based on the ideXlab platform.
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Static and dynamic characteristics of an InAs / InP quantum-dot optical amplifier operating at high temperatures
Optics Express, 2017Co-Authors: O E Yal, A W Illinger, S B Anyoudeh, F S Chanbel, S Ichkovskyi, V M Ikhelashvili, J P R Eithmaier, E IsensteinAbstract:We report on high quality InAs/InP quantum dot optical amplifiers for the 1550 nm Wavelength range operating over a wide temperature range of 25 to 100 °C. A temperature dependent shift of the peak gain Wavelength at a rate of 0.78 nm/K is observed. Consequently, two possible modes of operation are performed for a systematic device characterization over the entire temperature range. In the first mode, the Signal Wavelength is tuned to always match the peak gain Wavelength while in the second mode, the Signal Wavelength is kept constant as the gain spectrum shifts with the temperature. Static characteristics, such as gain spectra and saturation levels, as well as dynamical properties, are presented. Distortion-less amplification of a single 28 Gbit/s Signal and cross-talk free amplification of two channels, detuned by 2 nm, were demonstrated over the entire temperature range.