Anthony W. Yu

Overview of the NASA LISA laser system development

Anthony W. Yu, Molly E. Fahey, Kenji Numata, Yvonne Kamdem Manewa et autres

Abstract NASA Goddard Space Flight Center (GSFC) is developing a laser system (LS) for the Laser Interferometer Space Antenna (LISA) mission, led by the European Space Agency with a launch date of 2035. The LS under development at NASA GSFC consists of …

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Overview of the NASA LISA laser system development

Anthony W. Yu, Kenji Numata, Molly E. Fahey, Maxime Pinchinat et autres

NASA Goddard Space Flight Center (GSFC) is developing the Laser System (LS) for the Laser Interferometer Space Antenna (LISA) mission, led by the European Space Agency (ESA) with a launch date of 2035. The LS under development at NASA GSFC consists of …

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LISA NASA engineering design unit (EDU) laser head metrology

Lauriane Karlen, Emmanuel Onillon, Stefan Kundermann, Steve Lecomte et autres

The Laser Interferometer Space Antenna (LISA) mission will form an interferometer spanning arm lengths of 2.5 million kilometers to detect cosmic ripples in spacetime with a picometer resolution. To be able to measure gravitational waves, the laser system must meet stringent performance …

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Towards a Heat-Resilient Pärnu: Integrating Sensor Networks, Satellite Data and Microscale Modelling

Andreas Hoy, Adrián Glodeanu, Igone García, Anthony W. Yu

The Regions4Climate project, funded under Horizon Europe, supports transformative adaptation by co-developing and testing tailored climate resilience solutions in 12 European regions. One of these is Pärnu, Estonia’s coastal “summer capital,” which—by Nordic standards—is particularly vulnerable to heat due to its unique …

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Development of a Dual Wavelength Microchip Laser for NASA's Raman Mass Spectrometer (RAMS)

Matthew W. Mullin, Jane Lee, Molly E. Fahey, Anthony W. Yu et autres

RAMS (Raman Mass Spectrometer) is a hybrid instrument with a combined capability of laser desorption mass spectrometry (LDMS) and Raman spectroscopy being built at NASA Goddard Space Flight Center. It allows for comprehensive evaluation of organic and inorganic composition of in situ …

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Tunneling of acoustic-gravity waves through critical levels to the upper atmosphere

Nikolai M. Gavrilov, Sergey P. Kshevetskii, Andrey V. Koval, Anthony W. Yu

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Strain Tuning a Nonplanar Ring Oscillator by 3.5 GHz: Theory and Experiment

Thomas J. Kane, Kenji Numata, Anthony W. Yu

We tuned the oscillating frequency of a nonplanar ring oscillator by 3.5 GHz by applying strain to the monolithic resonator using a piezoelectric element. The voltage applied to the piezoelectric element was 192 volts, corresponding to a tuning coefficient of 18.2 MHz/volt. …

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Ultra-low noise laser and optical frequency comb-based timing system for the Black Hole Explorer (BHEX) mission

Hannah Tomio, Guangning Yang, Holly Leopardi, Kenji Numata et autres

In this effort, we demonstrate the performance of a highly stable time reference for the proposed Black Hole Explorer (BHEX) mission, a space-based extension to the Event Horizon Telescope (EHT) Very Long Baseline Interferometry (VLBI) project. This precision timing system is based …

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Ultra-low noise laser and optical frequency comb-based timing system for the Black Hole Explorer (BHEX) mission

Hannah Tomio, Guangning Yang, Holly Leopardi, Kenji Numata et autres

In this effort, we demonstrate the performance of a highly stable time reference for the proposed Black Hole Explorer (BHEX) mission, a space-based extension to the Event Horizon Telescope (EHT) Very Long Baseline Interferometry (VLBI) project. This precision timing system is based …

Solid state multi-wavelength laser development for planetary science laser mass spectrometer

Jane J. Lee, Andrei B. Sushkov, Molly E. Fahey, Anthony W. Yu et autres

Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICPMS) is a versatile technique used for identifying the composition of geological materials and quantifying element abundances. The PLASMA (Pulsed Laser Ablation Sampling and Mass Analysis) investigation, supported through the NASA DALI (Development and Advancement …

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Investigation into the origin of the RF phase noise for the LISA laser transmitter

Jennifer Campbell, Xiaozhen Xu, Demetrios Poulios, Molly E. Fahey et autres

The Laser Interferometer Space Antenna (LISA) mission is a collaborative consortium led by the European Space Agency (ESA) in cooperation with the National Aeronautics and Space Administration (NASA). LISA’s goal is to capture gravitational wave events, such as spacetime distortions caused by …

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Characterization of Regolith And Trace Economic Resources (CRATER): An Orbitrap‐based laser desorption mass spectrometry instrument for in situ exploration of the Moon

S. Ray, Ricardo Arévalo, Adrian E. Southard, Lori Willhite et autres

RATIONALE: Characterization of Regolith And Trace Economic Resources (CRATER), an Orbitrap™-based laser desorption mass spectrometry instrument designed to conduct high-precision, spatially resolved analyses of planetary materials, is capable of answering outstanding science questions about the Moon's formation and the subsequent processes that …

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