Antenna-Coupled TES Bolometer Arrays for CMB Polarimetry

摘要

We describe the design and performance of polarization selective antenna-coupled TES arrays that will be usedin several upcoming Cosmic Microwave Background (CMB) experiments: SPIDER, BICEP-2/SPUD. The fullylithographic polarimeter arrays utilize planar phased-antennas for collimation (F/4 beam) and microstrip filtersfor band definition (25% bandwidth). These devices demonstrate high optical efficiency, excellent beam shapes,and well-defined spectral bands. The dual-polarization antennas provide well-matched beams and low crosspolarization response, both important for high-fidelity polarization measurements. These devices have so farbeen developed for the 100 GHz and 150 GHz bands, two premier millimeter-wave atmospheric windows forCMB observations. In the near future, the flexible microstrip-coupled architecture can provide photon noise-limited detection for the entire frequency range of the CMBPOL mission. This paper is a summary of theprogress we have made since the 2006 SPIE meeting in Orlando, FL.