Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Shakhmuratov, R N"'
Autor:
Shakhmuratov, R. N.
Square-wave pulse generation with a variable duty ratio can be realized with the help of ideas of Talbot array illuminators formulated for binary phase gratings. A binary temporal phase modulation of CW laser field propagating through a group-delay-d
Externí odkaz:
http://arxiv.org/abs/2207.12910
M\"{o}ssbauer spectroscopy is applied to study ultrasound vibration of a granular material. A pile of powder is placed onto the surface of piezo transducer vibrated with the frequency 12.68 MHz. The size of grains (1.3 $\mu$m) is much smaller than th
Externí odkaz:
http://arxiv.org/abs/2012.14272
Autor:
Shakhmuratov, R. N., Vagizov, F. G.
It is shown that analysis of M\"{o}ssbaur spectra of a granulated medium, immersed into the epoxy resin without hardener, allows to study mechanical vibrations of granules. In our experiments, small particles of the potassium ferrocyanide with a 1.25
Externí odkaz:
http://arxiv.org/abs/2001.07511
Autor:
Shakhmuratov, R. N.
A protocol, which essentially increases the efficiency of the quantum memory based on the atomic frequency comb (AFC), is proposed. It is well known that a weak short pulse, transmitted trough a medium with a periodic structure of absorption peaks se
Externí odkaz:
http://arxiv.org/abs/1912.05867
Autor:
Shakhmuratov, R. N.
Publikováno v:
Phys. Rev. A 100, 043823 (2019)
The spectrum of a CW field whose phase experiences a periodic sawtooth modulation is analyzed. Two types of the sawtooth phase modulation are considered. One is created by combining many harmonics of the fundamental frequency. The second is produced
Externí odkaz:
http://arxiv.org/abs/1906.11091
Autor:
Shakhmuratov, R. N.
Pulse filtering through a medium with infinite periodic structure in transmission spectrum is analyzed. Two types of filters are considered. The first, named harmonic frequency crystal (HFC), is the filter whose widths of transmitting and absorbing w
Externí odkaz:
http://arxiv.org/abs/1805.08725
Autor:
Shakhmuratov, R. N., Vagizov, F. G.
Publikováno v:
Phys. Rev. A 99, 033831 (2019)
Single photon, emitted in a transition between two states, has a frequency distribution of intensity, which is given by Lorentzian if the transition is only naturally broadened and the period of observation $T$ is long compared to the lifetime $T_{1}
Externí odkaz:
http://arxiv.org/abs/1712.09214
Autor:
Shakhmuratov, R. N., Vagizov, F. G.
Publikováno v:
Phys. Rev. B 95, 245429 (2017)
We measure subnanometer displacements of thin samples vibrated by piezotransducer. Samples contain $^{57}$Fe nuclei, which are exposed to 14.4 keV $\gamma$-radiation. Vibration produces sidebands from a single absorption line of the sample. The sideb
Externí odkaz:
http://arxiv.org/abs/1612.04622
Autor:
Shakhmuratov, R. N.
Publikováno v:
Phys. Rev. A 95, 033805 (2017)
The resonant filtering method transforming frequency modulated radiation field into a train of short pulses is proposed to apply in optical domain. Effective frequency modulation can be achieved by electro-optic modulator or by resonant frequency mod
Externí odkaz:
http://arxiv.org/abs/1609.06872
High finesse frequency combs (HFC) with large ratio of the frequency spacing to the width of the spectral components have demonstrated remarkable results in many applications such as precision spectroscopy and metrology. We found that low finesse fre
Externí odkaz:
http://arxiv.org/abs/1512.01115