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Optical characterization of OMT-coupled TES bolometers for LiteBIRD

Journal of Low Temperature Physics Springer Nature 209:3-4 (2022) 396-408

Authors:

J Hubmayr, Par Ade, A Adler, E Allys, D Alonso, K Arnold, D Auguste, J Aumont, R Aurlien, Je Austermann, S Azzoni, C Baccigalupi, Aj Banday, R Banerji, Rb Barreiro, N Bartolo, S Basak, E Battistelli, L Bautista, Ja Beall, D Beck, S Beckman, K Benabed, J Bermejo-Ballesteros, M Bersanelli, J Bonis, J Borrill, F Bouchet, F Boulanger, S Bounissou, M Brilenkov, Ml Brown, M Bucher, E Calabrese, M Calvo, P Campeti, A Carones, Fj Casas, A Catalano, A Challinor, V Chan, K Cheung, Y Chinone, C Chiocchetta, Se Clark, L Clermont, S Clesse, J Cliche, F Columbro, Ja Connors

Abstract:

Feedhorn- and orthomode transducer- (OMT) coupled transition edge sensor (TES) bolometers have been designed and micro-fabricated to meet the optical specifications of the LiteBIRD high frequency telescope (HFT) focal plane. We discuss the design and optical characterization of two LiteBIRD HFT detector types: dual-polarization, dual-frequency-band pixels with 195/280 GHz and 235/337 GHz band centers. Results show well-matched passbands between orthogonal polarization channels and frequency centers within 3% of the design values. The optical efficiency of each frequency channel is conservatively reported to be within the range 0.64 - 0.72, determined from the response to a cryogenic, temperature-controlled thermal source. These values are in good agreement with expectations and either exceed or are within 10% of the values used in the LiteBIRD sensitivity forecast. Lastly, we report a measurement of loss in Nb/SiNx/Nb microstrip at 100 mK and over the frequency range 200–350 GHz, which is comparable to values previously reported in the literature.
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First light for GRAVITY Wide

Astronomy & Astrophysics EDP Sciences 665 (2022) a75

Authors:

R Abuter, F Allouche, A Amorim, C Bailet, M Bauböck, J-P Berger, P Berio, A Bigioli, O Boebion, ML Bolzer, H Bonnet, G Bourdarot, P Bourget, W Brandner, Y Clénet, B Courtney-Barrer, Y Dallilar, R Davies, D Defrère, A Delboulbé, F Delplancke, R Dembet, PT de Zeeuw, A Drescher, A Eckart, C Édouard, F Eisenhauer, M Fabricius, H Feuchtgruber, G Finger, NM Förster Schreiber, E Garcia, P Garcia, F Gao, E Gendron, R Genzel, JP Gil, S Gillessen, T Gomes, F Gonté, C Gouvret, P Guajardo, S Guieu, M Hartl, X Haubois, F Haußmann, G Heißel, Th Henning, S Hippler, S Hönig, M Horrobin, N Hubin, E Jacqmart, L Jochum, L Jocou, A Kaufer, P Kervella, H Korhonen, L Kreidberg, S Lacour, S Lagarde, O Lai, V Lapeyrère, R Laugier, J-B Le Bouquin, J Leftley, P Léna, D Lutz, F Mang, A Marcotto, D Maurel, A Mérand, F Millour, N More, H Nowacki, M Nowak, S Oberti, T Ott, L Pallanca, L Pasquini, T Paumard, K Perraut, G Perrin, R Petrov, O Pfuhl, N Pourré, S Rabien, C Rau, S Robbe-Dubois, S Rochat, M Salman, M Schöller, J Schubert, N Schuhler, J Shangguan, T Shimizu, S Scheithauer, A Sevin, F Soulez, A Spang, E Stadler, J Stadler, C Straubmeier, E Sturm, LJ Tacconi, KRW Tristram, F Vincent, S von Fellenberg, S Uysal, F Widmann, E Wieprecht, E Wiezorrek, J Woillez, S Yazici, A Young, G Zins
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Kiloparsec view of a typical star-forming galaxy when the Universe was ∼1 Gyr old

Astronomy & Astrophysics EDP Sciences 665 (2022) l8

Authors:

R Herrera-Camus, NM Förster Schreiber, SH Price, H Übler, AD Bolatto, RL Davies, D Fisher, R Genzel, D Lutz, T Naab, A Nestor, T Shimizu, A Sternberg, L Tacconi, K Tadaki
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Impact of the effective thickness from anti-reflective sub-wavelength structures in achromatic half-wave plate design

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 12190 (2022) 121902k-121902k-10

Authors:

Ryota Takaku, Susanna Azzoni, Tommaso Ghigna, Takashi Hasebe, Thuong D Hoang, Yurika Hoshino, Nobuhiko Katayama, Kunimoto Komatsu, Kuniaki Konishi, Makoto Kuwata-Gonokami, Tomotake Matsumura, Haruyuki Sakurai, Yuki Sakurai, Shinya Sugiyama, Noriko N Yamasaki, Junji Yumoto
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QUBIC: the Q and U bolometric interferometer for cosmology

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 12190 (2022) 121902t-121902t-17

Authors:

M Piat, ES Battistelli, P de Bernardis, G D'Alessandro, M De Petris, L Grandsire, J-Ch Hamilton, TD Hoang, S Marnieros, S Masi, A Mennella, L Mousset, C O'Sullivan, D Prêle, G Stankowiak, A Tartari, J-P Thermeau, SA Torchinsky, F Voisin, M Zannoni, P Ade, JG Alberro, A Almela, G Amico, LH Arnaldi, D Auguste, J Aumont, S Azzoni, S Banfi, B Bélier, A Baù, D Bennett, L Bergé, J-Ph Bernard, M Bersanelli, M-A Bigot-Sazy, J Bonaparte, J Bonis, E Bunn, D Burke, D Buzi, F Cavaliere, P Chanial, C Chapron, R Charlassier, AC Cobos Cerutti, F Columbro, A Coppolecchia, G De Gasperis, M De Leo, S Dheilly, C Duca, L Dumoulin, A Etchegoyen, A Fasciszewski, LP Ferreyro, D Fracchia, C Franceschet, MM Gamboa Lerena, KM Ganga, B García, ME García Redondo, M Gaspard, D Gayer, M Gervasi, M Giard, V Gilles, Y Giraud-Heraud, M Gómez Berisso, M González, M Gradziel, MR Hampel, D Harari, S Henrot-Versillé, F Incardona, E Jules, J Kaplan, C Kristukat, L Lamagna, S Loucatos, T Louis, B Maffei, W Marty, A Mattei, A May, M McCulloch, L Mele, D Melo, L Montier, LM Mundo, JA Murphy, JD Murphy, F Nati, E Olivicri, C Oriol, A Paiella, F Pajot, A Passerini, H Pastoriza, A Pelosi, C Perbost, M Perciballi, F Pezzotta, F Piacentini, L Piccirillo, G Pisano, M Platino, G Polenta, R Puddu, D Rambaud, E Rasztocky, P Ringegni, GE Romero, JM Salum, A Schillaci, CG Scóccola, S Scully, S Spinelli, M Stolpovskiy, AD Supanitsky, P Timbie, M Tomasi, C Tucker, G Tucker, D Viganò, N Vittorio, F Wicek, M Wright, A Zullo
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