Continuous-wave terahertz spectrometer without active phase modulation (Conference Presentation)

2020 ◽  
Author(s):  
Björn Globisch ◽  
Lars Liebermeister ◽  
Simon Nellen ◽  
Robert B. Kohlhaas ◽  
Martin Schell
Keyword(s):  
Phase Modulation ◽  
Continuous Wave ◽  
Active Phase

Jitter reduction by intracavity active phase modulation in a mode-locked semiconductor laser

2009 ◽  
Vol 34 (5) ◽  
pp. 677 ◽  
Author(s):  
Sarper Ozharar ◽  
Ibrahim Ozdur ◽  
Franklyn Quinlan ◽  
Peter J. Delfyett
Keyword(s):  
Semiconductor Laser ◽  
Phase Modulation ◽  
Active Phase

scholarly journals Continuous-wave squeezed states of light via ‘up-down’ self-phase modulation

2019 ◽  
Vol 27 (16) ◽  
pp. 22408
Author(s):  
Amrit Pal Singh ◽  
Stefan Ast ◽  
Moritz Mehmet ◽  
Henning Vahlbruch ◽  
Roman Schnabel
Keyword(s):  
Phase Modulation ◽  
Continuous Wave ◽  
Squeezed States ◽  
Self Phase Modulation

Optical spectrum evolution induced by altering input light wavelength spacing

2016 ◽  
Vol 30 (01) ◽  
pp. 1550259
Author(s):  
Minjie Wang ◽  
Caiwen Ma
Keyword(s):  
Phase Modulation ◽  
Optical Spectrum ◽  
Continuous Wave ◽  
Evolution Process ◽  
Light Wavelength ◽  
Optical Fields ◽  
Wavelength Spacing ◽  
Highly Nonlinear Fiber ◽  
Highly Nonlinear ◽  
Modulated Light

This study explored the optical spectrum evolution process using a pump-modulated light and a continuous-wave probe, launched simultaneously into a 1 km highly nonlinear fiber. A total of 70 optical spectra were obtained by each changing the wavelength spacing (0.4 nm) between the probe and pump lights. Simulation results indicated that wavelength spacing between the two beams caused a cyclical optical spectrum evolution process induced by cross-phase modulation. As input light wavelength spacing increased, the coupling between the two optical fields showed obvious attenuation in each neat, multi-peak cycle.

Continuous-Wave Self-Focusing and Self-Phase Modulation in C 60 -Benzene Solution

1992 ◽  
Vol 9 (12) ◽  
pp. 647-649 ◽  
Author(s):  
Han Yanong ◽  
Zhang Weijun ◽  
Dong Fengzhong ◽  
Xia Yuxing ◽  
Zang Wencheng ◽  
...  
Keyword(s):  
Phase Modulation ◽  
Continuous Wave ◽  
Benzene Solution ◽  
Self Phase Modulation ◽  
Self Focusing

scholarly journals Integrated photonics enables continuous-beam electron phase modulation

Nature ◽  
2021 ◽  
Vol 600 (7890) ◽  
pp. 653-658
Author(s):  
Jan-Wilke Henke ◽  
Arslan Sajid Raja ◽  
Armin Feist ◽  
Guanhao Huang ◽  
Germaine Arend ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Electron Beam ◽  
Electron Energy ◽  
Free Electron ◽  
Phase Modulation ◽  
Quantum Control ◽  
Continuous Wave ◽  
Quantum Walks ◽  
Integrated Photonics ◽  
Electron Quantum

AbstractIntegrated photonics facilitates extensive control over fundamental light–matter interactions in manifold quantum systems including atoms1, trapped ions2,3, quantum dots4 and defect centres5. Ultrafast electron microscopy has recently made free-electron beams the subject of laser-based quantum manipulation and characterization6–11, enabling the observation of free-electron quantum walks12–14, attosecond electron pulses10,15–17 and holographic electromagnetic imaging18. Chip-based photonics19,20 promises unique applications in nanoscale quantum control and sensing but remains to be realized in electron microscopy. Here we merge integrated photonics with electron microscopy, demonstrating coherent phase modulation of a continuous electron beam using a silicon nitride microresonator. The high-finesse (Q0 ≈ 106) cavity enhancement and a waveguide designed for phase matching lead to efficient electron–light scattering at extremely low, continuous-wave optical powers. Specifically, we fully deplete the initial electron state at a cavity-coupled power of only 5.35 microwatts and generate >500 electron energy sidebands for several milliwatts. Moreover, we probe unidirectional intracavity fields with microelectronvolt resolution in electron-energy-gain spectroscopy21. The fibre-coupled photonic structures feature single-optical-mode electron–light interaction with full control over the input and output light. This approach establishes a versatile and highly efficient framework for enhanced electron beam control in the context of laser phase plates22, beam modulators and continuous-wave attosecond pulse trains23, resonantly enhanced spectroscopy24–26 and dielectric laser acceleration19,20,27. Our work introduces a universal platform for exploring free-electron quantum optics28–31, with potential future developments in strong coupling, local quantum probing and electron–photon entanglement.

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