350 citations · 1.3k across the 19 of their papers we have counts for
20 papers
Open-path Dual-comb Spectroscopy for Multispecies Trace Gas Detection in the 4.5 μm to 5 μm Spectral Region
Fabrizio R. Giorgetta, Jeff Peischl, Daniel I. Herman +4
Open-path dual-comb spectroscopy provides multi-species atmospheric gas concentration measurements with high precision. Here, we extend open-path dual comb spectroscopy to the mid-…
Stellar Spectroscopy in the Near-infrared with a Laser Frequency Comb
Andrew J. Metcalf, Tyler Anderson, Chad F. Bender +34
The discovery and characterization of exoplanets around nearby stars is driven by profound scientific questions about the uniqueness of Earth and our Solar System, and the conditio…
Dual-comb spectroscopy with tailored spectral broadening in SiN nanophotonics
Esther Baumann, Eli V. Hoenig, Edgar F. Perez +10
SiN waveguides, pumped at 1550 nm, can provide spectrally smooth, broadband light for gas spectroscopy in the important 2 m to 2.5 m atmospheric wat…
Mid-infrared frequency comb generation via cascaded quadratic nonlinearities in quasi-phase-matched waveguides
Abijith S. Kowligy, Alex Lind, Daniel D. Hickstein +7
We experimentally demonstrate a simple configuration for mid-infrared (MIR) frequency comb generation in quasi-phase-matched lithium niobate waveguides using the cascaded-…
Dual frequency comb spectroscopy in the molecular fingerprint region
Henry Timmers, Abijith Kowligy, Alex Lind +8
Spectroscopy in the molecular fingerprint spectral region (6.5-20 m) yields critical information on material structure for physical, chemical and biological sciences. Despite de…
High Coherence Mid-Infrared Dual Comb Spectroscopy Spanning 2.6 to 5.2 microns
Gabriel Ycas, Fabrizio R. Giorgetta, Esther Baumann +4
Mid-infrared dual-comb spectroscopy has the potential to supplant conventional high-resolution Fourier transform spectroscopy in applications that require high resolution, accuracy…
High-harmonic generation in periodically poled waveguides
Daniel D. Hickstein, David R. Carlson, Abijith Kowligy +10
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…
Ultrabroadband supercontinuum generation and frequency-comb stabilization using on-chip waveguides with both cubic and quadratic nonlinearities
Daniel D. Hickstein, Hojoong Jung, David R. Carlson +13
Using aluminum-nitride photonic-chip waveguides, we generate optical-frequency-comb supercontinuum spanning from 500 nm to 4000 nm with a 0.8 nJ seed pulse, and show that the spect…
Frequency stability characterization of a broadband fiber Fabry-Perot interferometer
Jeff Jennings, Samuel Halverson, Ryan Terrien +3
An optical etalon illuminated by a white light source provides a broadband comb-like spectrum that can be employed as a calibration source for astronomical spectrographs in radial…
Rapid, broadband spectroscopic temperature measurement of CO2 using VIPA spectroscopy
Andrew Klose, Gabriel Ycas, Flavio C. Cruz +2
Time-resolved spectroscopic temperature measurements of a sealed carbon dioxide sample cell were realized with an optical frequency comb combined with a two-dimensional dispersive…
Mid-Infrared Optical Frequency Combs based on Difference Frequency Generation for Molecular Spectroscopy
Flavio C. Cruz, Daniel L. Maser, Todd Johnson +5
Mid-infrared femtosecond optical frequency combs were produced by difference frequency generation of the spectral components of a near-infrared comb in a 3-mm-long MgO:PPLN crystal…
Demonstration of a Near-IR Laser Comb for Precision Radial Velocity Measurements in Astronomy
X. Yi, K. Vahala, S. Diddams +14
We describe a successful effort to produce a laser comb around 1.55 m in the astronomical H band using a method based on a line-referenced, electro-optical-modulation frequency…
Tunable, Stable Source of Femtosecond Pulses Near 2 μm via Supercontinuum of an Erbium Mode-Locked Laser
Andrew Klose, Gabriel Ycas, Daniel L. Maser +1
A source of ultrashort pulses of light in the 2 μm region was constructed using supercontinuum broadening from an erbium mode-locked laser. The output spectrum spanned 1000 nm to 2…
The Habitable-zone Planet Finder Calibration System
Samuel Halverson, Suvrath Mahadevan, Lawrence Ramsey +9
We present the design concept of the wavelength calibration system for the Habitable-zone Planet Finder instrument (HPF), a precision radial velocity (RV) spectrograph designed to…
A near infrared frequency comb for Y+J band astronomical spectroscopy
Steve Osterman, Gabriel G. Ycas, Scott A. Diddams +8
Radial velocity (RV) surveys supported by high precision wavelength references (notably ThAr lamps and I2 cells) have successfully identified hundreds of exoplanets; however, as th…
Generation of a 650 nm - 2000 nm Laser Frequency Comb based on an Erbium-Doped Fiber Laser
Gabriel Ycas, Steve Osterman, Scott A. Diddams
We present a laser frequency comb based upon a 250 MHz mode-locked erbium-doped fiber laser that spans more than 300 terahertz of bandwidth, from 660 nm to 2000 nm. The system gene…
Demonstration of On-Sky Calibration of Astronomical Spectra using a 25 GHz near-IR Laser Frequency Comb
Gabriel G. Ycas, Franklyn Quinlan, Scott A. Diddams +8
We describe and characterize a 25 GHz laser frequency comb based on a cavity-filtered erbium fiber mode-locked laser. The comb provides a uniform array of optical frequencies spann…
A High-Resolution Atlas of Uranium-Neon in the H Band
Stephen L. Redman, Gabriel G. Ycas, Ryan Terrien +8
We present a high-resolution (R ~ 50 000) atlas of a uranium-neon (U/Ne) hollow-cathode spectrum in the H-band (1454 nm to 1638 nm) for the calibration of near-infrared spectrograp…
A Near Infrared Laser Frequency Comb for High Precision Doppler Planet Surveys
S. Osterman, S. Diddams, F. Quinlan +3
We discuss the laser frequency comb as a near infrared astronomical wavelength reference, and describe progress towards a near infrared laser frequency comb at the National Institu…
A 12.5 GHz-Spaced Optical Frequency Comb Spanning >400 nm for near-Infrared Astronomical Spectrograph Calibration
F. Quinlan, G. Ycas, S. Osterman +1
A 12.5 GHz-spaced optical frequency comb locked to a Global Positioning disciplined oscillator for near-IR spectrograph calibration is presented. The comb is generated via filterin…