# 18th International Workshop on Low Temperature Detectors (LTD-18)

22-26 July 2019
Milano
Europe/Rome timezone

## An On-Chip Superconducting Kinetic Inductance Fourier Transform Spectrometer for mm-Wave Astronomy

24 Jul 2019, 11:00
15m
Auditorium G. Testori (Milano)

### Auditorium G. Testori

#### Milano

Piazza Città di Lombardia, 1, 20124 Milano MI
Oral Presentation Low Temperature Detector fabrication techniques and materials

### Description

An on-chip FTS consists of two waveguides coupled to long superconducting transmission lines (STLs) (∼ 520 mm) using two coupling probes. The signal propagating on one of the STLs is phase shifted with respect to the other line with a bias current that affects the nonlinear dependence of kinetic inductance, $\mathcal{L}_k(I)$ of the STL material. Here we describe measurements of a superconducting on-chip FTS design coupled to a dual polarization W-band (90 GHz - 110 GHz) waveguide. We also describe the design, simulation, and fabrication of a new broadband planar antenna-coupled on-chip superconducting FTS. These devices have applications in ground-based and space-based millimeter-wave spectral surveys.

Less than 5 years of experience since completion of Ph.D Y Y