153 citations · 615 across the 21 of their papers we have counts for
22 papers
The Refractive Index of Gallium Antimonide
Ulrich Galander, Nicolas Huwyler, Mirela Encheva +2
Gallium antimonide (GaSb) is a key material for near- and mid-infrared photonics, enabling high-performance laser architectures and detectors. Design and simulation of such devices…
The R-index: A universal metric for evaluating OAM content and mode purity in optical fields
Monika Bahl, Georgios M. Koutentakis, Mikhail Maslov +4
Despite its pivotal role in optical manipulation, high-capacity communications, and quantum information, a general measure of orbital angular momentum (OAM) in structured light rem…
Broadband birefringence spectroscopy with sub-kHz precision
Maximilian Prinz, Dominik Charczun, Marcin Bober +5
Although current amorphous high-reflective mirror coatings have had tremendous success in metrology applications, they are inherently limited by thermal fluctuations in their coati…
Group Delay Dispersion Measurements of Novel Multilayer Interference Coatings in the Mid-Infrared Spectral Regime
Ulrich Galander, Maximilian Prinz, Lukas W. Perner +1
We present the methods and results for broadband group delay dispersion measurements for all-monocrystalline and amorphous-crystalline hybrid supermirrors, as well as an all-amorph…
Detection of carbon monoxide using a polarization-multiplexed erbium dual-comb fiber laser
P. E. Collin Aldia, Jiayang Chen, Jonas K. C. Ballentin +2
We present a compact, reliable, and robust free-running all-polarization-maintaining erbium (Er) single-cavity dual-comb laser generated via polarization multiplexing with gain sha…
Fast Gain Dynamics in Interband Cascade Lasers
Florian Pilat, Andreas Windischhofer, Maximilian Beiser +8
Interband Cascade Lasers (ICL) have matured into a versatile technological platform in the mid-infrared spectral domain. To broaden their applicability even further, ongoing resear…
Low Phase Noise, Record-High Power Optical Parametric Oscillator Tunable from 2.7-4.7 μm for Metrology Applications
Vito F. Pecile, Michael Leskowschek, Norbert Modsching +3
Within the domain of optical frequency comb systems operating in the mid-infrared, extensive exploration has been undertaken regarding critical parameters such as stabilization, co…
Theory of angular momentum transfer from light to molecules
Mikhail Maslov, Georgios M. Koutentakis, Mateja Hrast +2
We present a theory describing interaction of structured light, such as light carrying orbital angular momentum, with molecules. The light-matter interaction Hamiltonian we derive…
Precise Measurement of Refractive Indices in Thin Film Heterostructures
Lukas W. Perner, Gar-Wing Truong, David Follman +5
We present a robust, precise, and accurate method to simultaneously measure the refractive indices of two transparent materials within an interference coating. This is achieved by…
Simultaneous Measurement of Mid-Infrared Refractive Indices in Thin-Film Heterostructures: Methodology and Results for GaAs/AlGaAs
Lukas W. Perner, Gar-Wing Truong, David Follman +5
We present our results for simultaneous measurement of the refractive indices of gallium arsenide (GaAs) and aluminum gallium arsenide (AlGaAs) from $2.…
Mid-infrared supermirrors with finesse exceeding 400 000
G. -W. Truong, L. W. Perner, D. M. Bailey +9
For trace gas sensing and precision spectroscopy, optical cavities incorporating low-loss mirrors are indispensable for path length and optical intensity enhancement. Optical inter…
Simple approach for extending the ambiguity-free-range of dual-comb ranging
Jakob Fellinger, Georg Winkler, P. E. Collin Aldia +8
Dual-comb (DC) ranging is an established method for high-precision and high-accuracy distance measurements. It is, however, restricted by an inherent length ambiguity and the requi…
Compact, all-PM fiber integrated and alignment-free ultrafast Yb:fiber NALM laser with sub-femtosecond timing jitter
Yuxuan Ma, Sarper H. Salman, Chen Li +8
We report a simple and compact design of a dispersion compensated mode-locked Yb:fiber oscillator based on a nonlinear amplifying loop mirror (NALM). The fully polarization maintai…
Mid-infrared monocrystalline interference coatings with excess optical loss below 10 ppm
G. Winkler, L. W. Perner, G. -W. Truong +13
We present high-reflectivity substrate-transferred single-crystal GaAs/AlGaAs interference coatings at a center wavelength of 4.54 um with record-low excess optical loss below 10 p…
Flexible all-PM NALM Yb:fiber laser design for frequency comb applications: operation regimes and their noise properties
Aline S. Mayer, Wilfrid Grosinger, Jakob Fellinger +8
We present a flexible all-polarization-maintaining (PM) mode-locked ytterbium (Yb):fiber laser based on a nonlinear amplifying loop mirror (NALM). In addition to providing detailed…
Tunable dual-comb from an all-polarization-maintaining single-cavity dual-color Yb:fiber laser
Jakob Fellinger, Aline S. Mayer, Georg Winkler +7
We demonstrate dual-comb generation from an all-polarization-maintaining dual-color ytterbium (Yb) fiber laser. Two pulse trains with center wavelengths at 1030 nm and 1060 nm resp…
Near-Infrared Scanning Cavity Ringdown for Optical Loss Characterization of Supermirrors
Gar-Wing Truong, Georg Winkler, Tobias Zederbauer +6
A cavity ringdown system for probing the spatial variation of optical loss across high-reflectivity mirrors is described. This system is employed to examine substrate-transferred c…
Phase-stabilized 100 mW frequency comb near 10 μm
Kana Iwakuni, Gil Porat, Thinh Q. Bui +5
Long-wavelength mid-infrared frequency combs with high power and flexible tunability are highly desired for molecular spectroscopy, including investigation of large molecules such…
OD + CO -> D + CO2 Branching Kinetics Probed with Time-Resolved Frequency Comb Spectroscopy
Thinh Q. Bui, Bryce J. Bjork, P. Bryan Changala +3
Time-resolved direct frequency comb spectroscopy (TRFCS) was used to study the kinetics of the deuterated analogue of the OH+CO->H+CO2 reaction, which is important for atmospheric…
Three Photon Absorption in Optical Parametric Oscillators Based on OP-GaAs
Oliver H. Heckl, Bryce J. Bjork, Georg Winkler +9
We report on the first singly-resonant (SR), synchronously pumped optical parametric oscillator (OPO) based on orientation-patterned gallium arsenide (OP-GaAs). Together with a dou…
Direct Frequency Comb Measurement of OD + CO -> DOCO Kinetics
Bryce J. Bjork, Thinh Q. Bui, Oliver H. Heckl +9
The kinetics of the OH + CO reaction, fundamental to both atmospheric and combustion chemistry, are complex due to the formation of the HOCO intermediate. Despite extensive studies…
High-performance near- and mid-infrared crystalline coatings
Garrett D. Cole, Wei Zhang, Bryce J. Bjork +11
Substrate-transferred crystalline coatings have recently emerged as a groundbreaking new concept in optical interference coatings. Building upon our initial demonstration of this t…