Transformation of Mössbauer <i>γ</i>-ray photon waveform into short pulses in dual-tone vibrating resonant absorber

Khairulin, I. R.; Antonov, V. A.; Radeonychev, Y. V.; Kocharovskaya, Оlga

doi:10.1088/1361-6455/aaeb84

Cited by 6 publications

(6 citation statements)

References 33 publications

(88 reference statements)

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“…A different method of pulse compression was recently reported in [15][16][17][18]. The capabilities of this method was experimentally demonstrated for gamma photons with long duration of a single-photon wave packet [15,16].…”

Section: Introductionmentioning

confidence: 99%

Pulse shaping by a frequency filtering of a sawtooth phase-modulated cw laser

Shakhmuratov

2019

Phys. Rev. A

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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 by electro-optic modulator fed by the relaxation oscillator, which generates a voltage slowly rising during charging the energy storage capacitor and dropping fast due to discharge by a short circuit. It is proposed to filter out the main spectral component of the sawtooth phase modulated field. This filtering produces short pulses from CW phase modulated field. Several filters are proposed to remove the selected spectral component. It is shown that such a filtering is capable to produce a train of short pulses. Duty cycle of this train is equal to the modulation period and duration of the pulses can vary from 10 −1 to 10 −2 of the period. Depending on the modulation frequency, the proposed method is capable to produce pulses with duration ranging from nanoseconds to a fraction of picosecond. PACS numbers:

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Section: Introductionmentioning

confidence: 99%

Pulse shaping by a frequency filtering of a sawtooth phase-modulated cw laser

Shakhmuratov

2019

Phys. Rev. A

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“…However, the common tools for controlling quantum optical interfaces, such as intense spectrally narrow coherent sources and highfinesse cavities are still unavailable in hard x-ray/-ray range, preventing from a direct realization of the basic optical transparency techniques such as EIT and ATS-transparency, for high-energy photons. Several different techniques to control resonant interaction between hard x-ray/-ray photons and nuclear ensembles were developed, based on variation of hyperfine or external magnetic field [10,17,18], mechanical displacement (periodic or non-periodic) of an absorber or source with respect to each other including acoustic vibration [12,16,[19][20][21][22][23][24][25][26][27], and placing nuclei into a spatial sandwich-like nano-structure [11]. The 25% reduction in absorption of 14.4-keV photons was observed via anti-crossing of the upper energy sublevels of 57 Fe nuclei in a crystal of FeCO 3 taking place at 30 K [10].…”

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confidence: 99%

“…The physical origin of AIT can be easily understood both in the laboratory reference frame and in the reference frame of the vibrating absorber ( In the vibrating reference frame, the spectrum of the incident single-photon wave packet is "seen" by nuclei as a comb of equidistant spectral components separated by the vibration frequency due to the Doppler effect ( Fig.2 red line, also see Supplemental Material) [12,22,26,27]. Amplitudes of the spectral components are proportional to Bessel functions of the first kind [12,22,26,27], (Fig.2). In the ideal case of monochromatic weak field and infinitely narrow spectral line of the absorber, the spectral sidebands are out of resonance and propagate through the medium without interaction with nuclei.…”

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confidence: 99%

“…In the case of piston-like absorber vibration (synchronous nuclear oscillations), the efficient resonant transformation of the incident quasi-monochromatic radiation into sidebands greatly enhanced its transmittance to 70% demonstrated in [12] and over 80% observed in [20]. It was shown that synchronization of the emerged sidebands can result in a strong amplitude modulation of the transmitted resonant field corresponding to ultra-short near-bandwidth-limited -ray pulses [12,21,22,26,27]. Similar effects of the resonant sideband generation and extremely short pulse formation can appear when VUV or XUV quasi-monochromatic radiation propagates through an atomic medium which resonance transition frequency is periodically modulated by a strong infrared or optical field via Stark effect [21,[28][29][30].…”

mentioning

confidence: 99%

“…In the vibrating reference frame, the spectrum of the incident single-photon wave packet is "seen" by nuclei as a comb of equidistant spectral components separated by the vibration frequency due to the Doppler effect (Fig. 2 red line, also see Supplemental Material) [12,22,26,27]. Amplitudes of the spectral components are proportional to Bessel functions of the first kind [12,22,26,27],…”

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confidence: 99%

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Observation of Acoustically Induced Transparency for γ -Ray Photons

et al. 2020

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We report an observation of a 148-fold suppression of resonant absorption of keV photons from exp (-5.2) to exp(-0.2) with preservation of their spectral and temporal characteristics in an ensemble of the resonant two-level 57 Fe nuclei at room temperature. The transparency was induced via collective acoustic oscillations of nuclei. The proposed technique allows extending the concept of induced optical transparency to a hard x-ray/-ray range and paves the way for acoustically controllable interface between x-ray/-ray photons and nuclear ensembles, advancing the field of x-ray/-ray quantum optics.The induced transparency of opaque medium for resonant electromagnetic radiation is a powerful tool for manipulating the field-matter interaction. The study of phenomena associated with transparency induced in natural and artificial quantum and classical systems for resonant electromagnetic radiation in a wide spectral range from microwaves to γ-rays, as well as their applications, is an extremely broad area of research [1][2][3][4][5][6][7][8][9][10][11][12], extended also to acoustic waves [13,14]. Self-induced transparency [1], transparency via Autler-Townes splitting (ATS) [2,3], and electromagnetically induced transparency (EIT) [4,5] including their analogs in various quantum and classical systems [6][7][8][9][10][11], are just several examples of numerous techniques for suppression of resonant absorption. Important applications of induced optical transparency such as high refractive index and nonlinearities at the few-photon level, slow and stored light, optical quantum information processing, etc. stimulate a development of similar techniques in the hard x-ray/γ-ray domain. Highenergy 10˗100-keV photons can be easier detected and tighter focused than optical photons [15], while corresponding resonant recoilless nuclear transitions have orders of magnitude narrower linewidths at room temperature than optical atomic transitions at a comparable solid density [12,16]. These features are promising for realization of very compact and efficient interfaces between single hard x-ray/-ray photons and nuclear ensembles. However, the common tools for controlling quantum optical interfaces, such as intense spectrally narrow coherent sources and highfinesse cavities are still unavailable in hard x-ray/-ray range, preventing from a direct realization of the basic optical transparency techniques such as EIT and ATS-transparency, for high-energy photons. Several different techniques to control resonant interaction between hard x-ray/-ray photons and nuclear ensembles were developed, based on variation of hyperfine or external magnetic field [10,17,18], mechanical displacement (periodic or non-periodic) of an absorber or source with respect to each other including acoustic vibration [12,16,[19][20][21][22][23][24][25][26][27], and placing nuclei into a spatial sandwich-like nano-structure [11]. The 25% reduction in absorption of 14.4-keV photons was observed via anti-crossing of the upper energy sublevels of 57 Fe nuclei...

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