The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
Sarah L Gilbert - One of the best experts on this subject based on the ideXlab platform.
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pressure Induced Shift and broadening of 1560 1630 nm carbon monoxide wavelength calibration lines
Journal of The Optical Society of America B-optical Physics, 2002Co-Authors: William C Swann, Sarah L GilbertAbstract:We have measured the line centers and the pressure-Induced Shifts of 14 lines in the 3ν rotational–vibrational band of carbon monoxide, 12C16O, and 18 lines in the corresponding band of 13C16O. These lines can be used as wavelength references in the optical fiber communication wavelength-division multiplexing L band (approximately 1565–1625 nm). The 12C16O spectrum has useful reference lines from 1560 to 1595 nm, and the 13C16O spectrum has lines from 1595 to 1630 nm. We observed that, except for a Shift of 35 nm toward longer wavelengths for the 13C16O spectrum, the behaviors of the two isotopic species are similar. We found that the pressure Shift varies with line number, from ∼+0.01 to +0.02 pm/kPa (∼0.16 to 0.31 MHz/Torr). In addition, we measured the pressure broadening of these lines; we found that it also varies with line number and is typically 0.3–0.4 pm/kPa (approximately 5–7 MHz/Torr).
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pressure Induced Shift and broadening of 1510 1540 nm acetylene wavelength calibration lines
Journal of The Optical Society of America B-optical Physics, 2000Co-Authors: William C Swann, Sarah L GilbertAbstract:We have measured the pressure-Induced Shift for 15 lines of the ν1+ν3 rotational–vibrational band of acetylene 12C2H2. These lines are useful as wavelength references in the 1510–1540-nm region. We find that the pressure Shift varies from +0.008(2) pm/kPa for line R1 to +0.043(2) pm/kPa for line R27, with many of the lines exhibiting a Shift near +0.017 pm/kPa (or, equivalently, +2.3×10-3 pm/Torr or -0.29 MHz/Torr). In addition, we have measured the pressure broadening of these lines and find that it also varies with line number and is typically ∼0.7 pm/kPa (∼12 MHz/Torr). We also evaluate the line sensitivity to temperature changes and electromagnetic fields.
Marek Osinski - One of the best experts on this subject based on the ideXlab platform.
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blue temperature Induced Shift and band tail emission in ingan based light sources
Applied Physics Letters, 1997Co-Authors: Petr G Eliseev, P Perlin, Jinhyun Lee, Marek OsinskiAbstract:Electro- and photoluminescence spectra of high-brightness light-emitting AlGaN/InGaN/GaN single-quantum-well structures are studied over a broad range of temperatures and pumping levels. Blue Shift of the spectral peak position was observed along with an increase of temperature and current. An involvement of band-tail states in the radiative recombination was considered, and a quantitative description of the blue temperature-Induced Shift was proposed assuming a Gaussian shape of the band tail.
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blue temperature Induced Shift and band tail emission in ingan based light sources
Applied Physics Letters, 1997Co-Authors: Petr G Eliseev, P Perlin, Marek OsinskiAbstract:Electro- and photoluminescence spectra of high-brightness light-emitting AlGaN/InGaN/GaN single-quantum-well structures are studied over a broad range of temperatures and pumping levels. Blue Shift of the spectral peak position was observed along with an increase of temperature and current. An involvement of band-tail states in the radiative recombination was considered, and a quantitative description of the blue temperature-Induced Shift was proposed assuming a Gaussian shape of the band tail.
William C Swann - One of the best experts on this subject based on the ideXlab platform.
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pressure Induced Shift and broadening of 1560 1630 nm carbon monoxide wavelength calibration lines
Journal of The Optical Society of America B-optical Physics, 2002Co-Authors: William C Swann, Sarah L GilbertAbstract:We have measured the line centers and the pressure-Induced Shifts of 14 lines in the 3ν rotational–vibrational band of carbon monoxide, 12C16O, and 18 lines in the corresponding band of 13C16O. These lines can be used as wavelength references in the optical fiber communication wavelength-division multiplexing L band (approximately 1565–1625 nm). The 12C16O spectrum has useful reference lines from 1560 to 1595 nm, and the 13C16O spectrum has lines from 1595 to 1630 nm. We observed that, except for a Shift of 35 nm toward longer wavelengths for the 13C16O spectrum, the behaviors of the two isotopic species are similar. We found that the pressure Shift varies with line number, from ∼+0.01 to +0.02 pm/kPa (∼0.16 to 0.31 MHz/Torr). In addition, we measured the pressure broadening of these lines; we found that it also varies with line number and is typically 0.3–0.4 pm/kPa (approximately 5–7 MHz/Torr).
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pressure Induced Shift and broadening of 1510 1540 nm acetylene wavelength calibration lines
Journal of The Optical Society of America B-optical Physics, 2000Co-Authors: William C Swann, Sarah L GilbertAbstract:We have measured the pressure-Induced Shift for 15 lines of the ν1+ν3 rotational–vibrational band of acetylene 12C2H2. These lines are useful as wavelength references in the 1510–1540-nm region. We find that the pressure Shift varies from +0.008(2) pm/kPa for line R1 to +0.043(2) pm/kPa for line R27, with many of the lines exhibiting a Shift near +0.017 pm/kPa (or, equivalently, +2.3×10-3 pm/Torr or -0.29 MHz/Torr). In addition, we have measured the pressure broadening of these lines and find that it also varies with line number and is typically ∼0.7 pm/kPa (∼12 MHz/Torr). We also evaluate the line sensitivity to temperature changes and electromagnetic fields.
Konstantin D Litasov - One of the best experts on this subject based on the ideXlab platform.
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revised calibration of the sm srb4o7 pressure sensor using the sm doped yttrium aluminum garnet primary pressure scale
Journal of Applied Physics, 2015Co-Authors: Sergey V Rashchenko, Alexander Kurnosov, Leonid Dubrovinsky, Konstantin D LitasovAbstract:The pressure-Induced Shift of Sm:SrB4O7 fluorescence was calibrated in a quasi-hydrostatic helium medium up to 60 GPa using the recent Sm-doped yttrium-aluminum garnet primary pressure scale as a reference. The resulting calibration can be written as P = −2836/14.3 [(1 + Δλ/685.51)−14.3 − 1]. Previous calibrations based on the internally inconsistent primary scales are revised, and, after appropriate correction, found to agree with the proposed one. The calibration extended to 120 GPa was also performed using corrected previous data and can be written as P = 4.20 Δλ (1 + 0.020 Δλ)/(1 + 0.036 Δλ).
H L Stormer - One of the best experts on this subject based on the ideXlab platform.
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interaction Induced Shift of the cyclotron resonance of graphene using infrared spectroscopy
Physical Review Letters, 2010Co-Authors: Erik Henriksen, Paul Caddenzimansky, Zhigang Jiang, L C Tung, Mollie Schwartz, Maika Takita, Y J Wang, Philip Kim, H L StormerAbstract:We report a study of the cyclotron resonance (CR) transitions to and from the unusual $n=0$ Landau level (LL) in monolayer graphene. Unexpectedly, we find the CR transition energy exhibits large (up to 10%) and nonmonotonic Shifts as a function of the LL filling factor, with the energy being largest at half filling of the $n=0$ level. The magnitude of these Shifts, and their magnetic field dependence, suggests that an interaction-enhanced energy gap opens in the $n=0$ level at high magnetic fields. Such interaction effects normally have a limited impact on the CR due to Kohn's theorem [W. Kohn, Phys. Rev. 123, 1242 (1961)], which does not apply in graphene as a consequence of the underlying linear band structure.