Harald Schwefel
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Physics
Harald Schwefel's Degrees
- PhD Physics University of New Zealand
- Masters Physics University of New Zealand
- Bachelors Physics University of New Zealand
Why Is Harald Schwefel Influential?
(Suggest an Edit or Addition)According to Wikipedia, Harald Schwefel is a German-born physicist currently based in New Zealand. He is an associate professor in the Department of Physics at the University of Otago and a principal investigator in the Dodd-Walls Centre. His research focuses on the interaction of light and matter in dielectric materials, and his speciality is whispering gallery mode resonators , small disks of dielectric which confine and store laser light to facilitate nonlinear interactions. He uses these to generate optical frequency combs and to coherently convert between microwave and optical photons.
Harald Schwefel's Published Works
Number of citations in a given year to any of this author's works
Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author
Published Works
- Nonlinear and quantum optics with whispering gallery resonators (2015) (226)
- Efficient microwave to optical photon conversion: an electro-optical realization (2016) (156)
- Dramatic shape sensitivity of directional emission patterns from similarly deformed cylindrical polymer lasers (2003) (151)
- Coherent Conversion Between Microwave and Optical Photons—An Overview of Physical Implementations (2019) (111)
- Broadband NIR photoluminescence from Bi-doped Ba2P2O7 crystals: insights into the nature of NIR-emitting Bismuth centers. (2010) (93)
- Fresnel filtering in lasing emission from scarred modes of wave-chaotic optical resonators. (2001) (89)
- Resonant electro-optic frequency comb (2018) (88)
- Modes of wave-chaotic dielectric resonators (2003) (75)
- Intracavity Squeezing Can Enhance Quantum-Limited Optomechanical Position Detection through Deamplification. (2015) (68)
- Whispering-gallery-mode-resonator-stabilized narrow-linewidth fiber loop laser. (2009) (68)
- Static envelope patterns in composite resonances generated by level crossing in optical toroidal microcavities. (2008) (68)
- Octave-spanning tunable parametric oscillation in crystalline Kerr microresonators (2019) (65)
- High-Q MgF₂ whispering gallery mode resonators for refractometric sensing in aqueous environment. (2014) (58)
- Identifying modes of large whispering-gallery mode resonators from the spectrum and emission pattern. (2014) (53)
- Interfacing transitions of different alkali atoms and telecom bands using one narrowband photon pair source (2015) (52)
- Gaussian-optical approach to stable periodic orbit resonances of partially chaotic dielectric micro-cavities. (2002) (52)
- Highly efficient generation of single-mode photon pairs from a crystalline whispering-gallery-mode resonator source (2014) (50)
- Coupled whispering gallery mode resonators in the Terahertz frequency range. (2008) (49)
- Whispering gallery modes at the rim of an axisymmetric optical resonator: analytical versus numerical description and comparison with experiment. (2013) (48)
- Microwave whispering gallery resonator for efficient optical up-conversion (2009) (46)
- Dielectric Rod Waveguide Antenna as THz Emitter for Photomixing Devices (2015) (45)
- Direct experimental observation of the single reflection optical Goos-Hänchen shift. (2008) (42)
- Finite element simulation of a perturbed axial-symmetric whispering-gallery mode and its use for intensity enhancement with a nanoparticle coupled to a microtoroid. (2013) (41)
- Sub-kHz lasing of a CaF₂ whispering gallery mode resonator stabilized fiber ring laser. (2012) (40)
- Bidirectional Electro-Optic Wavelength Conversion in the Quantum Ground State (2020) (37)
- CaF2 whispering-gallery-mode-resonator stabilized-narrow-linewidth laser. (2010) (37)
- Progress in Asymmetric Resonant Cavities: Using Shape as a Design Parameter in Dielectric Microcavity Lasers (2004) (35)
- Experimental observation of internally pumped parametric oscillation and quadratic comb generation in a χ(2) whispering-gallery-mode microresonator. (2019) (31)
- Squeezed vacuum states from a whispering gallery mode resonator (2019) (23)
- Sensitivity limits of millimeter-wave photonic radiometers based on efficient electro-optic upconverters (2018) (23)
- Experimental characterization of an uniaxial angle cut whispering gallery mode resonator. (2013) (23)
- Efficient single sideband microwave to optical conversion using an electro-optical whispering gallery mode resonator (2016) (22)
- Quick root searching method for resonances of dielectric optical microcavities with the boundary element method. (2011) (21)
- Directional emission of dielectric disks with a finite scatterer in the THz regime. (2013) (19)
- Polarization-selective out-coupling of whispering gallery modes (2016) (18)
- Towards terahertz detection and calibration through spontaneous parametric down-conversion in the terahertz idler-frequency range generated by a 795 nm diode laser system (2018) (17)
- Polarization properties and dispersion relations for spiral resonances of a dielectric rod (2005) (15)
- Near-infrared single-photon spectroscopy of a whispering gallery mode resonator using energy-resolving transition edge sensors (2014) (15)
- Prism coupling of high-Q terahertz whispering-gallery-modes over two octaves from 0.2 THz to 1.1 THz. (2018) (15)
- Dielectric tuning and coupling of whispering gallery modes using an anisotropic prism (2016) (15)
- Frequency tuning of single photons from a whispering-gallery mode resonator to MHz-wide transitions (2016) (14)
- Origin of clustered frequency combs in Kerr microresonators (2018) (14)
- Optical microcavities: new understandings and developments (2017) (12)
- Selective Coupling Enhances Harmonic Generation of Whispering-Gallery Modes (2018) (12)
- Optomechanical position detection enhanced by de-amplification using intracavity squeezing (2015) (11)
- An efficient Fredholm method for the calculation of highly excited states of billiards (2007) (11)
- An improved method for calculating resonances of multiple dielectric disks arbitrarily positioned in the plane. (2009) (9)
- Quantum Information Technologies: Coherent Conversion Between Microwave and Optical Photons—An Overview of Physical Implementations (Adv. Quantum Technol. 1/2020) (2020) (8)
- Maximization of the optical intra-cavity power of whispering-gallery mode resonators via coupling prism. (2016) (8)
- Crystalline MgF2 whispering gallery mode resonators for enhanced bulk index sensitivity (2014) (8)
- Anomalous blue-shift of terahertz whispering-gallery modes via dielectric and metallic tuning. (2019) (7)
- Soliton linear-wave scattering in a Kerr microresonator (2021) (7)
- Thermal noise in electro-optic devices at cryogenic temperatures (2020) (6)
- Directionality and vector resonances of regular and chaotic dielectric microcavities (2004) (6)
- Ultra‐Low Threshold Titanium‐Doped Sapphire Whispering‐Gallery Laser (2021) (5)
- Random telegraph signal analysis with a recurrent neural network. (2020) (4)
- Narrow-bandwidth high-order harmonics driven by long-duration hot spots (2012) (4)
- Nonlinear power dependence of the spectral properties of an optical parametric oscillator below threshold in the quantum regime (2019) (4)
- Selected Emerging THz Technologies (2015) (4)
- Detecting THz in the telecom range: All resonant THz up-conversion in a whispering gallery mode resonator (2014) (3)
- Efficient up-conversion of weak THz signals into the optical domain using a whispering gallery mode resonator (2016) (3)
- Frequency tuning of a triply-resonant whispering-gallery mode resonator to MHz wide transitions for proposed quantum repeater schemes (2015) (3)
- A chaotic approach clears up imaging (2015) (2)
- An ultra-stable microresonator-based electro-optic dual frequency comb (2021) (2)
- Taking detection to the limit with optical microcavities: Recent advances presented at the 560. WE Heraeus Seminar (2014) (2)
- In optical pumping, less can be more (2014) (2)
- High-order harmonics of a continuous-wave driving laser (2010) (2)
- Three-Cornered-Hat Measurement of a Whispering Gallery Mode Stabilized Laser (2010) (1)
- Widely-tunable optical parametric oscillation in MgF2 microresonators (2018) (1)
- Compact Millimeter and Submillimeter-Wave Photonic Radiometer for Cubesats (2020) (1)
- Efficient and Coherent Conversion of 80 GHz Signals into the Optical Domain Using a Nonlinear Whispering Gallery Mode Resonator (2016) (1)
- Study of free-space coupling into mm-wave whispering-gallery mode resonators for a radioastronomy receiver (2017) (1)
- Efficient optical up-conversion by coherent sum-frequency generation for highly sensitive terahertz detection (2011) (1)
- Visualising the heart of chaos (2021) (1)
- Waveguide coupling to high index whispering gallery mode resonators in the THz domain (2014) (1)
- Numerically efficient multipole method for photonic molecules (2008) (1)
- Sub-THz photon counting receiver working at room temperature for polarization measurements of the cosmic microwave background radiation (2016) (1)
- Dielectric perturbations: anomalous resonance frequency shifts in optical resonators. (2020) (1)
- Complex polarization states of off-axis uniaxial whispering gallery mode resonators (2013) (1)
- Mode Competition and Output Power from Regular and Chaotic Dielectric Cavity Lasers (2005) (1)
- Sub-kHz linewidth of crystalline whispering gallery mode resonator stabilized ring-laser (2012) (1)
- Using the lasing threshold in whispering gallery mode resonators for refractive index sensing (2018) (1)
- Level Crossing in toroidal on-chip microcavities (2008) (0)
- Counter-Propagating Solitons in MgF2 Microresonators using an Auxiliary Laser (2020) (0)
- Highly efficient polarization-selective out-coupling of harmonic light in birefringent WGM resonators (Conference Presentation) (2018) (0)
- Efficient Boundary Integral Method for Quantum Billiards (2006) (0)
- Continuous Tunability of a Microresonator Parametric Oscillator (2019) (0)
- Ultra‐Low Threshold Titanium‐Doped Sapphire Whispering‐Gallery Laser (Advanced Optical Materials 8/2022) (2022) (0)
- Elliptically polarized whispering gallery modes in uniaxial crystal resonators (2012) (0)
- Whispering gallery mode resonators: An alternate platform for Ti:sapphire lasers and amplifiers (2022) (0)
- Direct Experimental Observation of the Goos Hanchen Shift (2008) (0)
- Publisher Correction: Resonant electro-optic frequency comb (2019) (0)
- C D ] 1 5 M ar 2 00 7 An efficient Fredholm method for calculation of highly excited states of billiards (2007) (0)
- Steady states, squeezing, and entanglement in intracavity triplet down conversion (2019) (0)
- Generating an ultra-stable dual frequency comb with a microresonator (2022) (0)
- Wideband Tunability of Kerr Parametric Oscillation in an MgF2 Microresonator (2019) (0)
- Near-infrared spectroscopy on a single photon level (2013) (0)
- Anomalous resonance shifts, distance calibration, and lasing in WGM resonators (2023) (0)
- Microwave-optical double resonance in a erbium-doped whispering-gallery-mode resonator (2022) (0)
- Crystalline MgF2 whispering gallery mode resonators for enhanced bulk index sensitivity (2014) (0)
- Optical microcavities: new understandings and developments: publisher’s note (2018) (0)
- Wideband multimode optical parametric oscillation in a Kerr microresonator. (2023) (0)
- Resonant Electro-optic Frequency Comb Generation in Lithium Niobate Disk Resonator inside a Microwave Cavity (2019) (0)
- Nonlinear and Quantum Optics within Whispering Gallery Mode Resonators (2018) (0)
- Emitter of continues-wave, ultra coherent, extreme ultraviolet radiation that is driven by low-power laser (2010) (0)
- Whispering gallery mode electro-optic dual frequency comb (2023) (0)
- Highly efficient generation of narrow-band single-mode photon pairs from a whispering gallery mode resonator (2014) (0)
- Refractometric Sensing with Crystalline MgF2 Whispering Gallery Mode Resonators (2014) (0)
- Third Harmonic Generation in Birefringent WGM Resonators: A Survey of Possible Geometries (2016) (0)
- Sum and difference frequency generation of optical and microwave photons in a whispering gallery mode resonator (2014) (0)
- Efficient single sideband microwave to optical conversion using a LiNbO3 WGM-resonator (2016) (0)
- Spectroscopy of Photonic Molecules in the Terahertz Range (2008) (0)
- Nonlinear single sideband microwave to optical conversion using an electro-optic WGM-resonator (2016) (0)
- Dielectric microcavities for THz radiation: Identical mode spectrum and coupling in poly-ethylene disks (2008) (0)
- More efficient second harmonic generation of whispering gallery modes by selective out-coupling (2017) (0)
- Author Correction: Visualising the heart of chaos (2021) (0)
- Single sideband microwave to optical photon conversion – an electro-optic realization (2017) (0)
- Observance of lasing and amplification in the first titanium doped sapphire whispering-gallery laser (2022) (0)
- Experimental Observation of Internally-pumped Parametric Oscillation and Quadratic Comb Generation in a Lithium Niobate Microresonator (2020) (0)
- Microresonator-based electro-optic dual frequency comb (2023) (0)
- Complex polarization in non z-cut whispering gallery mode resonators (2013) (0)
- Large-Frequency-Shift Tunable Parametric Oscillation in a Kerr Microresonator (2020) (0)
- Soliton linear-wave scattering in a Kerr microresonator (2022) (0)
- Author Correction: Visualising the heart of chaos (2021) (0)
- Broadly tunable light sources using four-wave mixing in magnesium fluouride microresonators (2019) (0)
- Towards two-photon interference with a whispering gallery photon pair source (2016) (0)
- Intermodal Four-wave Mixing in MgF2 Microresonators Enable Ultra-wide Frequency Generation (2022) (0)
- Nonlinear Scattering of Dissipative Solitons in a Kerr Microresonator (2022) (0)
- Deformed microdisk lasers and refractive billiards (2002) (0)
- Crystalline whispering gallery mode stabilized ring-laser (2011) (0)
- Analytical study of free-space coupling of THz radiation for a new radioastronomy receiver concept (2017) (0)
- Observation of Internally-Pumped Parametric Oscillation and Initial Stages of χ(2) Comb Generation in a Lithium Niobate Microresonator (2020) (0)
- Anomalous blue-shift of terahertz whispering-gallery modes (2019) (0)
- Distance calibration via Newton’s rings in yttriumlithium fluoride whispering gallery mode resonators (2022) (0)
- 0 30 80 16 v 1 4 A ug 2 00 3 Modes of wave-chaotic dielectric resonators (0)
- Frequency Shifting Whispering Gallery Modes with Planar Dielectric Substrates (2018) (0)
- Photonic molecules in the Terahertz - mode splitting in coupled dielectric whispering gallery mode resonators (2008) (0)
- Resonant electro-optic frequency comb (2019) (0)
- Auto-stabilization of ring lasers based on whispering gallery mode resonators (2010) (0)
- Nonlinear Quantum Optics in a Millimeter Size Whispering Gallery Mode Resonator (2015) (0)
- Triple-resonant whispering gallery mode resonators for THz photons visualization by upconversion (2010) (0)
- Whispering Gallery Mode microresonator stabilized fiber loop laser (2009) (0)
- Mode-hop-free tunable optical parametric oscillator utilizing a whispering gallery mode resonator (2012) (0)
- Direct high precision measurement of optical Goos-Hänchen Shift (2007) (0)
- Mixing microwave and light: Electro-optic frequency combs and more (Conference Presentation) (2020) (0)
- Octave-spanning tunable parametric oscillation in crystalline Kerr microresonators (2019) (0)
- C D ] 1 9 Se p 20 07 An efficient Fredholm method for calculation of highly excited states of billiards (2007) (0)
- Electro-Optic Frequency Comb Generation in Lithium Niobate Whispering Gallery Mode Resonators (2019) (0)
- Publisher Correction: Resonant electro-optic frequency comb (2019) (0)
- Spherical Microcavity Stabilization of a Fiber Loop Laser (2009) (0)
- Taking detection to the limit with optical microcavities: Recent advances presented at the 560. WE Heraeus Seminar (2014) (0)
- New designs and noise channels in electro-optic microwave to optical up-conversion (2020) (0)
- Visualising the heart of chaos (2021) (0)
- Broadband second harmonic generation in whispering gallery mode resonators enhanced by polarization selective out-coupling (2017) (0)
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