Two-Photon Transitions of
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                    State by Using an Optical Frequency Comb and a Continuous-Wave Laser

This paper introduces the Quadrature Amplitude Modulation (QAM) Radio over Fiber (RoF) framework dependent on Optical Frequency Comb (OFC) generation utilizing Fabry-Perot Laser Diode (FPLD) and Continuous Wave Laser Diode (CWLD). In this, optical Millimeter-Wave (MMW) can be created ether utilizing ease FPLD with an outside optical infusion or a continuous wave laser diode. At the base, optical MMW can be recognized by utilizing photodetector in the two transmissions. The experimental results are explained by using the constellation and eye diagram.

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Coherent control of acoustic phonons in a silica fiber using a multi-GHz optical frequency comb

Communications Physics ◽

10.1038/s42005-021-00581-9 ◽

2021 ◽

Vol 4 (1) ◽

Author(s):

Mamoru Endo ◽

Shota Kimura ◽

Shuntaro Tani ◽

Yohei Kobayashi

Keyword(s):

Coherent Control ◽

Continuous Wave ◽

Frequency Comb ◽

Effective Interaction ◽

Interaction Strength ◽

Single Mode ◽

Optical Frequency Comb ◽

Material Structure ◽

Optical Frequency ◽

Acoustic Phonons

AbstractMulti-gigahertz mechanical vibrations that stem from interactions between light fields and matter—known as acoustic phonons—have long been a subject of research. In recent years, specially designed functional devices have been developed to enhance the strength of the light-matter interactions because excitation of acoustic phonons using a continuous-wave laser alone is insufficient. However, the strength of the interaction cannot be controlled appropriately or instantly using these structurally-dependent enhancements. Here we show a technique to control the effective interaction strength that does not operate via the material structure in the spatial domain; instead, the method operates through the structure of the light in the time domain. The effective excitation and coherent control of acoustic phonons in a single-mode fiber using an optical frequency comb that is performed by tailoring the optical pulse train. This work represents an important step towards comb-matter interactions.

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Stable continuous-wave THz vector imaging based on an optical frequency comb

10.1117/12.2604690 ◽

2021 ◽

Author(s):

Zuomin Yang ◽

Zijie Lu ◽

Shiwei Wang ◽

Hongqi Zhang ◽

Lu Zhang ◽

...

Keyword(s):

Continuous Wave ◽

Frequency Comb ◽

Optical Frequency Comb ◽

Optical Frequency

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The Optimization of Cold Rubidium Atom Two-Photon Transition Excitation with an Erbium-Fiber Optical Frequency Comb

Applied Sciences ◽

10.3390/app9050921 ◽

2019 ◽

Vol 9 (5) ◽

pp. 921

Author(s):

Haoyuan Lu ◽

Jianxiao Leng ◽

Jianye Zhao

Keyword(s):

Laser Cooling ◽

Repetition Rate ◽

Frequency Comb ◽

Optical Frequency Comb ◽

Optical Frequency ◽

Rubidium Atom ◽

Two Photon ◽

Photon Transition ◽

Fiber Optical ◽

Fine Tune

We demonstrated the observation of cold rubidium atom two-photon transition excitation by a fiber optical frequency comb. In addition to this, we optimized the repetition rate of optical frequency comb to enhance two-photon intensity by controlling cavity length and pump source of optical comb. This technique can fine tune repetition rate to corresponding stepwise two-photon transition resonance frequency and improve the transition intensity by three times. This method is useful in Doppler laser cooling and detection of macromolecules.

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Relationship between the voltage applied to MZM arms and the generation of optical frequency comb

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i4.15.23026 ◽

2018 ◽

Vol 7 (4.15) ◽

pp. 405

Author(s):

Yousif I. Hammadi ◽

Tahreer S. Mansour

Keyword(s):

Continuous Wave ◽

Frequency Comb ◽

Optical Frequency Comb ◽

Laser Source ◽

Optical Frequency ◽

High Data ◽

Rate Transmission ◽

Rf Signals ◽

Rf Signal ◽

Data Rate Transmission

In this study, an optical frequency comb source (OFCS) based on a dual-drive Mach–Zehnder modulator (MZM) is constructed and theoretically demonstrated. A mathematical model of the constructed OFCS is then built to investigate the effect of the peak-to-peak radio frequency (RF) signals applied to the MZM arms on the generated optical frequency comb (OFC) lines at the MZM output. A dual-drive MZM, a continuous wave laser source, and an RF signal source are included in the OFCS. The chirp parameter can be controlled and 64 comb lines generated at a comb spacing of 25 GHz by regulating voltages applied to the MZM arms. The developed OFCS is relatively simple but valuable. The generated OFC lines can be used for high data-rate transmission.

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