Mr. Bugao Zou Profile

Bugao Zou

at Cornell Univ

SPIE Involvement:

Author

Publications (12)

Proceedings Article | 17 August 2024 Presentation

Optical characterization of aluminum-based 280 GHz CCAT MKID pixels and arrays

Anna Vaskuri, Jordan Wheeler, Jason Austermann, Michael Vissers, James Beall, James Burgoyne, Victoria Butler, Scott Chapman, Steve Choi, Abigail Crites, Cody Duell, Rodrigo Freundt, Anthony Huber, Zachary Huber, Johannes Hubmayr, Lawrence Lin, Alicia Middleton, Michael Niemack, Thomas Nikola, Douglas Scott, Adrian Sinclair, Ema Smith, Gordon Stacey, Joel Ullom, Jeffrey van Lanen, Eve Vavagiakis, Samantha Walker, Bugao Zou

Proceedings Volume PC13102, PC131020E (2024) https://doi.org/10.1117/12.3017858

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Proceedings Article | 16 August 2024 Poster + Paper

CCAT: detector noise limited performance of the RFSoC-based readout electronics for mm/sub-mm/far-IR KIDs

Adrian Sinclair, James Burgoyne, Anthony Huber, Colin Murphy, Steve Choi, Cody Duell, Zachary Huber, Yaqiong Li, Scott Chapman, Michael Niemack, Thomas Nikola, Eve Vavagiakis, Samantha Walker, Jordan Wheeler, Jason Austermann, Lawrence Lin, Ruixuan Xie, Bugao Zou, Philip Mauskopf

Proceedings Volume 13102, 131022E (2024) https://doi.org/10.1117/12.3020557

KEYWORDS: Sensors, Resonators, Detector arrays, Cryogenics, Quantum reading, Quantum detection, Equipment, Physics, Cryostats, Astronomy

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Proceedings Article | 16 August 2024 Presentation + Paper

CCAT: a status update on the EoR-Spec instrument module for Prime-Cam

Rodrigo Freundt, Yaqiong Li, Doug Henke, Jason Austermann, James Burgoyne, Scott Chapman, Steve Choi, Cody Duell, Zach Huber, Michael Niemack, Thomas Nikola, Lawrence Lin, Dominik Riechers, Gordon Stacey, Anna Vaskuri, Eve Vavagiakis, Jordan Wheeler, Bugao Zou

Proceedings Volume 13102, 131020U (2024) https://doi.org/10.1117/12.3018477

KEYWORDS: Fabry–Perot interferometry, Submillimeter telescopes, Stray light analysis, Detector arrays, Equipment, Design, Fabrication, Silicon, Lenses, Cryogenics

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Proceedings Article | 16 August 2024 Presentation + Paper

Virtually Image Phased Array (VIPA): demonstration of the next generation direct detection spectrometer for velocity resolved spectroscopy in the far-infrared

Thomas Nikola, Bugao Zou, Gordon Stacey, Jake Connors, Nicholas Cothard, Alexander Kutyrev, Eric Mentzell, Karwan Rostem, Edward Wollack, Willem Jellema, Tsung-Yu Kao, Alan W. Lee

Proceedings Volume 13102, 131020F (2024) https://doi.org/10.1117/12.3020350

KEYWORDS: Cryostats, Quantum cascade lasers, Spectral resolution, Silicon, Reflectivity, Collimation, Spectroscopy, Mirrors, Parabolic mirrors, Dielectrics

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We have created and demonstrated a Virtually Imaged Phased Array (VIPA) device for velocity resolved spectroscopy in the far-IR and will present the first cryogenic (LHe) measurements of the spectral profile of a prototype VIPA at 115.7 µm. A VIPA is a compact spectral filter without moving parts that consists of a resonating cavity that generates angular dispersion due to constructive interference, and that can deliver an instantaneous spectrum with a resolving power of 100,000 or more. Coupled with superconducting direct detection detectors, the VIPA promises unsurpassed sensitivity at velocity resolutions > 3 km/s, making it a prime choice for spectroscopic instruments to observe e.g. protoplanetary disks to trace the gaseous building blocks out of which planets form. Due to their compactness and absence of moving parts, VIPAs are optimal for balloon and space-borne astronomical instruments like the NASA Pioneer Mission POEMM and the proposed NASA Probe Mission FIRSST. The prototype we have measured was made of a 3 × 5 × 1 cm block of high-purity float-zone silicon. The entrance and exit sides of the VIPA are highly parallel, and the entrance side was fully metallized (gold-coated) except for a narrow entrance slit resulting in a reflectivity of 100%, while the exit side was metallized with an inductive mesh resulting in a reflectivity of about 88%. The measurement was done using a custom testbed that included separate cryostats for a cryogenically cooled THz Quantum Cascade Laser (QCL) and the VIPA, as well as a warm pyroelectric detector. The QCL was tuned to a number of different frequencies near 2.59 THz and the detector was scanned along the dispersion direction. Our VIPA prototype achieved the designed resolving power of 15,000 and the spectral profile matched extremely well with the expectations from our simulations. We are now building a full testbed to straightforwardly measure and characterize VIPAs and other GHz/THz filters with resolving powers of order 100,000 using tuneable THz lasers.

Proceedings Article | 16 August 2024 Poster + Paper

CCAT: Prime-Cam optics overview and status update

Zachary Huber, Lawrence Lin, Eve Vavagiakis, Rodrigo Freundt, Victoria Butler, Scott Chapman, Steve Choi, Abigail Crites, Cody Duell, Patricio Gallardo, Anthony Huber, Ben Keller, Alicia Middleton, Michael Niemack, Thomas Nikola, John Orlowski-Scherer, Ema Smith, Gordon Stacey, Samantha Walker, Bugao Zou

Proceedings Volume 13102, 1310222 (2024) https://doi.org/10.1117/12.3020373

KEYWORDS: Design, Equipment, Optical design, Cryostats, Point spread functions, Physics, Fabrication, Lenses, Sensors, Cryogenics

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Proceedings Article | 16 August 2024 Poster + Paper

CCAT: characterizing the Fabry-Pérot interferometer mirrors and mount for the epoch of reionization spectrometer

Bugao Zou, J. Richard Bond, Victoria Butler, Rodrigo Freundt, Zachary Huber, Michael Niemack, Thomas Nikola, Gordon Stacey, Eve Vavagiakis

Proceedings Volume 13102, 131022H (2024) https://doi.org/10.1117/12.3018491

KEYWORDS: Mirrors, Semiconducting wafers, Silicon, Terahertz radiation, Spectroscopy

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Proceedings Article | 31 August 2022 Poster + Paper

CCAT-prime: the design of the epoch of reionization spectrometer detector arrays

Yaqiong Li, Jason Austermann, James Beall, Steve Choi, Cody Duell, Jiansong Gao, Zachary Huber, Johannes Hubmayr, Ben Keller, Lawrence Lin, Michael Niemack, Thomas Nikola, Gordon Stacey, Joel Ullom, Eve Vavagiakis, Michael Vissers, Jordan Wheeler, Bugao Zou

Proceedings Volume 12190, 121902G (2022) https://doi.org/10.1117/12.2630209

KEYWORDS: Semiconducting wafers, Sensors, Detector arrays, Silicon, Spectroscopy, Optical alignment, Aluminum, Wafer bonding, Telescopes, Submillimeter telescopes

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Proceedings Article | 31 August 2022 Poster + Presentation + Paper

CCAT-prime: the optical design for the Epoch of reionization spectrometer

Zachary Huber, Steve Choi, Cody Duell, Rodrigo Freundt, Patricio Gallardo, Ben Keller, Yaqiong Li, Lawrence Lin, Michael Niemack, Thomas Nikola, Dominik Reichers, Gordon Stacey, Eve Vavagiakis, Bugao Zou

Proceedings Volume 12190, 121902H (2022) https://doi.org/10.1117/12.2629744

KEYWORDS: Image quality, Optical design, Telescopes, Detector arrays, Receivers, Lenses, Mirrors, Collimation, Lens design, Spectroscopy

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Proceedings Article | 31 August 2022 Presentation + Paper

CCAT-prime: design of the Mod-Cam receiver and 280 GHz MKID instrument module

Eve Vavagiakis, Cody Duell, Jason Austermann, James Beall, Tanay Bhandarkar, Scott Chapman, Steve Choi, Gabriele Coppi, Simon Dicker, Mark Devlin, Rodrigo Freundt, Jiansong Gao, Christopher Groppi, Terry Herter, Zachary Huber, Johannes Hubmayr, Doug Johnstone, Ben Keller, Anna Kofman, Yaqiong Li, Philip Mauskopf, Jeff McMahon, Jenna Moore, Colin Murphy, Michael Niemack, Thomas Nikola, John Orlowski-Scherer, Kayla Rossi, Adrian Sinclair, Gordon Stacey, Joel Ullom, Michael Vissers, Jordan Wheeler, Zhilei Xu, Ningfeng Zhu, Bugao Zou

Proceedings Volume 12190, 1219004 (2022) https://doi.org/10.1117/12.2630115

KEYWORDS: Sensors, Cryogenics, Aluminum, Receivers, Optical filters, Detector arrays, Telescopes, Metamaterials, Magnetism, Carbon

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Proceedings Article | 31 August 2022 Poster + Paper

CCAT-prime: the design and characterization of the silicon mirrors for the Fabry-Perot interferometer in the Epoch of reionization spectrometer

Bugao Zou, Steve Choi, Nicholas Cothard, Rodrigo Freundt, Zachary Huber, Yaqiong Li, Michael Niemack, Thomas Nikola, Dominik Riechers, Kayla Rossi, Gordon Stacey, Eve Vavagiakis

Proceedings Volume 12190, 121902B (2022) https://doi.org/10.1117/12.2629518

KEYWORDS: Silicon, Mirrors, Transmittance, Reflectivity, Semiconducting wafers, Etching, Dielectrics, Spectroscopy, Fabry–Perot interferometers, Fabry–Perot interferometry, Antireflective coatings, FSS based metamaterials

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Proceedings Article | 31 August 2022 Presentation + Paper

CCAT-prime: the epoch reionization spectrometer for primce-cam on FYST

Thomas Nikola, Steve Choi, Cody Duell, Rodrigo Freundt, Zachary Huber, Yaqiong Li, Kshama Malavalli, Mike Niemack, Kayla Rossi, Gordon Stacey, Eve Vavagiakis, Bugao Zou, Nicholas Cothard, Jason Austermann, Jordan Wheeler, Jiansong Gao, Michael Vissers, Johannes Hubmayr, James Beall, Joel Ullom

Proceedings Volume 12190, 121900G (2022) https://doi.org/10.1117/12.2629338

KEYWORDS: Fabry–Perot interferometers, Sensors, Mirrors, Detector arrays, Telescopes, Semiconducting wafers, Spectroscopy, Silicon, Optical filters, Finite element methods, Spectral resolution

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Proceedings Article | 15 December 2020 Poster + Paper

CCAT-prime: Designs and status of the first light 280 GHz MKID array and mod-cam receiver

Cody Duell, Eve Vavagiakis, Jason Austermann, Scott Chapman, Steve Choi, Nicholas Cothard, Brad Dober, Patricio Gallardo, Jiansong Gao, Christopher Groppi, Terry Herter, Gordon Stacey, Zachary Huber, Johannes Hubmayr, Doug Johnstone, Yaqiong Li, Philip Mauskopf, Jeff McMahon, Michael Niemack, Thomas Nikola, Kayla Rossi, Sara Simon, Adrian Sinclair, Michael Vissers, Jordan Wheeler, Bugao Zou

Proceedings Volume 11453, 114531F (2020) https://doi.org/10.1117/12.2562757

KEYWORDS: Sensors, Microwave radiation, Detector arrays, Telescopes, Galaxy groups and clusters, Inductance, Multiplexing

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Showing 5 of 12 publications

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