Results 11 to 20 of about 9,926 (249)
High-Precision Regulation of Nano-Grating Linewidth Based on ALD
Micromachines, 2022 A nano-grating standard with accurate linewidth can not only calibrate the magnification of nano-measurement instruments, but can also enable comparison of linewidths. Unfortunately, it is still a challenging task to control the linewidth of nano-grating
Yaxin Zhang +11 more
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Tunable passively Q-switched ultranarrow linewidth erbium-doped fiber laser
Results in Physics, 2020 A tunable passively Q-switched erbium-doped fiber laser with ultranarrow linewidth is proposed and demonstrated. With the single wall carbon nanotubes (SWCNTs) as the passive Q-switch, the ultranarrow linewidth laser operation is realized based on ...
M.Z. Zulkifli +6 more
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IEEE Photonics Journal, 2022 In the paper, a hybrid Mach-Zehnder interferometer (MZI) and Rayleigh backscattering (RB) injection is designed and applied in the erbium-doped fiber (EDF) ring laser configuration.
Chien-Hung Yeh +4 more
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Universe, 2023 The Davis–Chandrasekhar–Fermi (DCF) method is widely used to indirectly estimate the strength of magnetic fields in star-forming regions. However, recent developments in this method have primarily focused on improving the measurement of angular ...
Shixian Mo, Keping Qiu
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Photonics, 2023 Narrow-linewidth lasers have a high spectral purity, long coherent length, and low phase noise, so they have important applications in atomic clocks, precision measurement, and quantum computing. We inject a transmitted laser from a narrow-linewidth (∼15
Lili Hao +4 more
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The Influence of Laser Linewidth on the Brillouin Shift Frequency Accuracy of BOTDR
Applied Sciences, 2018 This paper analyzes the influence of laser linewidth on the measurement accuracy of a frequency-scanning Brillouin optical time domain reflectometer (FS-BOTDR), allowing for both the width of Brillouin gain spectrum and the signal-to-noise ratio (SNR) of
Qing Bai +8 more
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Ultranarrow-linewidth levitated nano-oscillator for testing dissipative wave-function collapse
Physical Review Research, 2020 Levitated nano-oscillators are promising platforms for testing fundamental physics and quantum mechanics in a new high mass regime. Levitation allows extreme isolation from the environment, reducing the decoherence processes that are crucial for these ...
A. Pontin +3 more
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L-Band Erbium Fiber Laser with Tunable and Narrow Sub-kHz Linewidth Output
Applied Sciences, 2023 In this paper, a wavelength-selectable erbium-doped fiber (EDF) laser in L-band bandwidth with a simple structure and low cost is described. To obtain stable single-longitudinal-mode (SLM) and narrow laser linewidth, the 2 m unpumped EDF-based saturable ...
Lan-Yin Chen +6 more
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Ultra narrow linewidth frequency reference via measurement and feedback
Comptes Rendus. Physique, 2023 The generation of very narrow linewidth light sources is of great importance in modern science. One such source is the superradiant laser, which relies on collectively interacting ultra long lived dipoles driven by incoherent light.
Barberena, Diego +3 more
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Atoms, 2022 In this work, we have applied polarization spectroscopy to study electromagnetically induced transparency involving hot Rb85 Rydberg state in a vapor cell using a Laguerre–Gaussian mode beam.
Naomy Duarte Gomes +3 more
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