Goutam Chattopadhyay

collaborators

2 papers

physics.optics2024

Flat silicon gradient index lens with deep reactive-ion-etched 3-layer anti-reflection structure for millimeter and submillimeter wavelengths

Fabien Defrance, Cecile Jung-Kubiak, John Gill +5

We present the design, fabrication, and characterization of a 100 mm diameter, flat, gradient-index (GRIN) lens fabricated with high-resistivity silicon, combined with a three-laye…

astro-ph.GA2010

Detection of OH $^{+}$ and H $_{2}$ O $^{+}$ towards Orion~KL

H. Gupta, P. Rimmer, J. C. Pearson +76

We report observations of the reactive molecular ions OH $^{+}$ , H $_{2}$ O $^{+}$ , and H $_{3}$ O $^{+}$ towards Orion KL with Herschel/HIFI. All three $N = 1 - 0$ fine-structure transitions of OH $^{+}$ …

Flat silicon gradient index lens with deep reactive-ion-etched 3-layer anti-reflection structure for millimeter and submillimeter wavelengths

Detection of OH+ and H2​O+ towards Orion~KL

Detection of OH $^{+}$ and H $_{2}$ O $^{+}$ towards Orion~KL