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Готові списки джерел за темами / Coherent optical pulses

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Добірка наукової літератури з теми "Coherent optical pulses"

Автор: Grafiati

Опубліковано: 11 березня 2023

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Статті в журналах з теми "Coherent optical pulses"

1

SHARABY, Y. A., A. JOSHI, and S. S. HASSAN. "COHERENT POPULATION TRANSFER IN V-TYPE ATOMIC SYSTEM." Journal of Nonlinear Optical Physics & Materials 22, no. 04 (2013): 1350044. http://dx.doi.org/10.1142/s0218863513500446.

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In this paper, we investigate numerically the modeled density matrix equations for the interaction of a three-level atomic system in V-configuration with a train of chirped optical n-pulses (up to n = 10) within and without the rotating wave approximation. For adopted data of Rb 87, maximal population transfer to either of the upper levels is achieved with n > 1 pulse via variation of chirp parameter/frequency mismatch of the closely lying upper levels. Optimal steady population transfer and maximum atomic coherence of the upper levels are predicted for non-zero chirp parameter and train of n = 1 - 10, 30 pulses.

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2

Xue, Yinghong, Yueping Niu, and Shangqing Gong. "External Modulation Optical Coherent Domain Reflectometry with Long Measurement Range." Sensors 21, no. 16 (2021): 5510. http://dx.doi.org/10.3390/s21165510.

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Optical coherent domain reflectometry (OCDR) can achieve a high spatial resolution that is independent of the bandwidth of the receiver, but the measurement range is usually very limited. Here we propose an external modulation OCDR system, in which a pair of linear frequency-modulated pulses generated by one modulator are employed as the probe pulse and the reference, respectively. The spatial resolution is determined by the frequency modulation range of the pulse, and the measurement speed is boosted by orders because the proposed technology can simultaneously diagnose a section of fiber with each pair of pulses, while only a single point can be accessed at a time in typical OCDR. In the demonstrational experiment, a measurement range of up to 50 km is achieved with a spatial resolution of 1.4 m and a measuring time of less than 30 s.

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3

Gabitov, Ildar R., Bridget Kennedy, and Andrei I. Maimistov. "Coherent Amplification of Optical Pulses in Metamaterials." IEEE Journal of Selected Topics in Quantum Electronics 16, no. 2 (2010): 401–9. http://dx.doi.org/10.1109/jstqe.2009.2032667.

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4

Semenov, A. L., and D. N. Bezbat’ko. "Coherent phonons excited by two optical pulses." Physics of the Solid State 58, no. 2 (2016): 333–35. http://dx.doi.org/10.1134/s106378341602027x.

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5

Jeong, Heejeong, та Ulf Österberg. "Coherent transients: optical precursors and 0π pulses". Journal of the Optical Society of America B 25, № 7 (2008): B1. http://dx.doi.org/10.1364/josab.25.0000b1.

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6

Sinyavskii, A. V. "Coherent-difference detection of optical radiation pulses." Quantum Electronics 25, no. 6 (1995): 605–6. http://dx.doi.org/10.1070/qe1995v025n06abeh000424.

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7

Aquila, A., M. Drescher, T. Laarmann, M. Barthelmeß, H. N. Chapman, and S. Bajt. "Moving the Frontier of Quantum Control into the Soft X-Ray Spectrum." International Journal of Optics 2011 (2011): 1–4. http://dx.doi.org/10.1155/2011/417075.

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The femtosecond nature of X-ray free electron laser (FEL) pulses opens up exciting research possibilities in time-resolved studies including femtosecond photoemission and diffraction. The recent developments of seeding X-ray FELs extend their capabilities by creating stable, temporally coherent, and repeatable pulses. This in turn opens the possibility of spectral engineering soft X-ray pulses to use as a probe for the control of quantum dynamics. We propose a method for extending coherent control pulse-shaping techniques to the soft X-ray spectral range by using a reflective geometry 4f pulse shaper. This method is based on recent developments in asymmetrically cut multilayer optic technology and piezoelectric substrates.

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8

Zaitsu, Shin-ichi, Takumi Tanabe, Kota Oshima, and Hiroyuki Hirata. "Theoretical Analysis of a Molecular Optical Modulator for a Continuous-Wave Laser Based on a Hollow-Core Photonic Crystal Fiber." Applied Sciences 8, no. 10 (2018): 1895. http://dx.doi.org/10.3390/app8101895.

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A THz optical modulator for a continuous-wave laser using a hollow-core photonic crystal fiber (HC-PCF) was proposed and theoretically analyzed. Lightwaves traveling through the HC-PCF is modulated by interactions with coherently driven Raman-active molecules in the core. The coherent molecular motion is excited by a pulse train having an interval between successive pulses shorter than the molecular dephasing time. In principle, a rotational transition of molecular hydrogen (S 0 (1)) at a pressure of 1 atm has a long enough dephasing time to maintain molecular coherence during a 1 GHz commercially available mode-locked pulse train. Optimization of the waveguide dispersion would enable phase-matching between the probe beam and generated sidebands during optical modulation. The proposed scheme would be achievable with a reasonable pump beam power and HC-PCF length, and with a feasible pressure of molecules in the core.

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9

Nakano, Yuta, Anton D. Shutov, Totaro Imasaka, and Alexei V. Sokolov. "Generation of Ultrafast Optical Pulses via Molecular Modulation in Ambient Air." Applied Sciences 9, no. 12 (2019): 2509. http://dx.doi.org/10.3390/app9122509.

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We investigated the possibility of making ever-shorter optical pulses by using the nonlinearity of ambient air. We produced a broad spectrum consisting of mutually coherent optical sidebands via collinear Raman generation driven by two picosecond laser pulses that are Raman-resonant with molecular vibrations of nitrogen. We demonstrated the ability to adjust the sideband phases via dispersion control which we accomplished by changing the optical path length of the generated multi-color beam through a pair of tilted glass plates. The resultant measured phases suggest the generation of a 3-fs optical pulse train.

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10

Sato, Takahiro, James M. Glownia, Matthiew R. Ware, Matthieu Chollet, Silke Nelson, and Diling Zhu. "A simple instrument to find spatiotemporal overlap of optical/X-ray light at free-electron lasers." Journal of Synchrotron Radiation 26, no. 3 (2019): 647–52. http://dx.doi.org/10.1107/s1600577519002248.

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A compact and robust diagnostic to determine spatial and temporal overlap between X-ray free-electron laser and optical laser pulses was developed and evaluated using monochromatic X-rays from the Linac Coherent Light Source. It was used to determine temporal overlap with a resolution of ∼10 fs, despite the large pulse energy fluctuations of the monochromatic X-ray pulses, and covers a wide optical wavelength range from ultraviolet to near-infrared with a single configuration.

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