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View article: Heterogeneous tantala photonic integrated circuits for sub-micron wavelength applications
Heterogeneous tantala photonic integrated circuits for sub-micron wavelength applications Open
Atomic and trapped-ion systems are the backbone of an emerging generation of quantum-based positioning, navigation, and timing (PNT) technologies. The miniaturization of such quantum systems offers tremendous technological advantages, espe…
View article: Second-order nonlinear frequency conversion in InGaP-on-insulator waveguides
Second-order nonlinear frequency conversion in InGaP-on-insulator waveguides Open
InGaP integrated on a silicon substrate has emerged as a promising platform for nonlinear and quantum photonics, offering high nonlinear conversion efficiency and scalability with silicon-based fabrication infrastructure. This work present…
View article: Heterogeneous tantala photonic integrated circuits for sub-micron wavelength applications
Heterogeneous tantala photonic integrated circuits for sub-micron wavelength applications Open
Atomic and trapped-ion systems are the backbone of a new generation of quantum-based positioning, navigation, and timing (PNT) technologies. The miniaturization of such quantum systems offers tremendous technological advantages, especially…
View article: Second harmonic generation in GaAs-on-insulator waveguides fabricated at the wafer-scale
Second harmonic generation in GaAs-on-insulator waveguides fabricated at the wafer-scale Open
Second harmonic generation (SHG) is demonstrated with unprecedented efficiency for a single-pass device. Modal phase-matching in GaAs-on-insulator waveguides is used to convert a 2.0 $\mu$m transverse-electric polarized pump to a 1.0 $\mu$…
View article: On-chip polarization rotator for type I second harmonic generation
On-chip polarization rotator for type I second harmonic generation Open
We demonstrate a polarization rotator integrated at the output of a GaAs waveguide producing type I second harmonic generation (SHG). Form-birefringent phase matching between the pump fundamental transverse electric (TE) mode near 2.0 µm w…
View article: Infrared frequency comb generation and spectroscopy with suspended silicon nanophotonic waveguides
Infrared frequency comb generation and spectroscopy with suspended silicon nanophotonic waveguides Open
Nanophotonic waveguides with sub-wavelength mode confinement and engineered\ndispersion profiles are an excellent platform for application-tailored\nnonlinear optical interactions at low pulse energies. Here, we present fully\nair clad sus…
View article: Multifunctional integrated photonics in the mid-infrared with suspended AlGaAs on silicon
Multifunctional integrated photonics in the mid-infrared with suspended AlGaAs on silicon Open
The microscale integration of mid- and longwave-infrared photonics could enable the development of fieldable, robust chemical sensors, as well as highly efficient infrared frequency converters. However, such technology would be defined by …
View article: Supplementary document for Nonlinear silicon waveguides generating broadband, spectrally engineered frequency combs spanning 2.0-8.5 μm - 4091804.pdf
Supplementary document for Nonlinear silicon waveguides generating broadband, spectrally engineered frequency combs spanning 2.0-8.5 μm - 4091804.pdf Open
Supplementary document
View article: Supplementary document for Multifunctional integrated photonics in the mid-infrared with suspended AlGaAs on silicon - 4093538.pdf
Supplementary document for Multifunctional integrated photonics in the mid-infrared with suspended AlGaAs on silicon - 4093538.pdf Open
Supplemental document
View article: Nonlinear silicon waveguides generating broadband, spectrally engineered frequency combs spanning 2.0-8.5 μm
Nonlinear silicon waveguides generating broadband, spectrally engineered frequency combs spanning 2.0-8.5 μm Open
Nanophotonic waveguides with sub-wavelength mode confinement and engineered dispersion profiles are an excellent platform for application-tailored nonlinear optical interactions at low pulse energies. Here, we present fully air clad suspen…
View article: Nonlinear Optics: Heterogeneously Integrated GaAs Waveguides on Insulator for Efficient Frequency Conversion (Laser Photonics Rev. 12(10)/2018)
Nonlinear Optics: Heterogeneously Integrated GaAs Waveguides on Insulator for Efficient Frequency Conversion (Laser Photonics Rev. 12(10)/2018) Open
In article number 1800149, Lin Chang and co-workers demonstrate a gallium-arsenide-on-insulator platform for integrated nonlinear photonics. Waveguides on this platform have high nonlinear coefficients, large index contrasts and low propag…
View article: Molecular fingerprinting with bright, broadband infrared frequency combs
Molecular fingerprinting with bright, broadband infrared frequency combs Open
Spectroscopy in the molecular fingerprint spectral region (6.7–20 µm) yields critical information on material structure for physical, chemical, and biological sciences. Despite decades of interest and effort, this portion of the electromag…
View article: Heterogeneously integrated GaAs waveguides on insulator for efficient frequency conversion
Heterogeneously integrated GaAs waveguides on insulator for efficient frequency conversion Open
Tremendous scientific progress has been achieved through the development of nonlinear integrated photonics. Prominent examples are Kerr-frequency-comb generation in micro-resonators, and supercontinuum generation and frequency conversion i…
View article: Mid-infrared frequency comb generation via cascaded quadratic nonlinearities in quasi-phase-matched waveguides
Mid-infrared frequency comb generation via cascaded quadratic nonlinearities in quasi-phase-matched waveguides Open
We experimentally demonstrate a simple configuration for mid-infrared (MIR) frequency comb generation in quasi-phase-matched lithium niobate waveguides using the cascaded-χ(2) nonlinearity. With nanojoule-scale pulses from an Er:fiber lase…
View article: Metal germanides for practical on-chip plasmonics in the mid infrared
Metal germanides for practical on-chip plasmonics in the mid infrared Open
Metal germanide thin films were investigated for infrared plasmonic applications. Thin films of copper and nickel were deposited onto amorphous germanium thin films and subsequently annealed at a range of temperatures. X-ray diffraction wa…
View article: Dual frequency comb spectroscopy in the molecular fingerprint region
Dual frequency comb spectroscopy in the molecular fingerprint region Open
Spectroscopy in the molecular fingerprint spectral region (6.5-20 $μ$m) yields critical information on material structure for physical, chemical and biological sciences. Despite decades of interest and effort, this portion of the electroma…
View article: High-harmonic generation in periodically poled waveguides
High-harmonic generation in periodically poled waveguides Open
Optical waveguides made from periodically poled materials provide high confinement of light and enable the generation of new wavelengths via quasi-phase-matching, making them a key platform for nonlinear optics and photonics. However, such…
View article: Multi-planar amorphous silicon photonics with compact interplanar couplers, cross talk mitigation, and low crossing loss
Multi-planar amorphous silicon photonics with compact interplanar couplers, cross talk mitigation, and low crossing loss Open
We propose and experimentally demonstrate a photonic routing architecture that can efficiently utilize the space of multi-plane (3D) photonic integration. A wafer with three planes of amorphous silicon waveguides was fabricated and charact…
View article: Maximizing waveguide integration density with multi-plane photonics
Maximizing waveguide integration density with multi-plane photonics Open
We propose and experimentally demonstrate a photonic routing architecture that can efficiently utilize the space of multi-plane (3D) photonic integration. A wafer with three planes of amorphous silicon waveguides was fabricated and charact…
View article: TEM EDS analysis of epitaxially-grown self-assembled indium islands
TEM EDS analysis of epitaxially-grown self-assembled indium islands Open
Epitaxially-grown self-assembled indium nanostructures, or islands, show promise as nanoantennas. The elemental composition and internal structure of indium islands grown on gallium arsenide are explored using Transmission Electron Microsc…
View article: A versatile, inexpensive integrated photonics platform
A versatile, inexpensive integrated photonics platform Open
We present an approach to fabrication and packaging of integrated photonic devices that utilizes waveguide and detector layers deposited at near-ambient temperature. All lithography is performed with a 365 nm i-line stepper, facilitating l…
View article: Electronic detection of surface plasmon polaritons by metal-oxide-silicon capacitor
Electronic detection of surface plasmon polaritons by metal-oxide-silicon capacitor Open
An electronic detector of surface plasmon polaritons (SPPs) is reported. SPPs optically excited on a metal surface using a prism coupler are detected by using a close-coupled metal-oxide-silicon (MOS) capacitor. Incidence-angle dependence …
View article: Robust packaging for fiber-to-grating couplers in a scalable photonics process
Robust packaging for fiber-to-grating couplers in a scalable photonics process Open
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