Low-Vibration Cryostat with Nanopositioners and Vector Magnet Tender, Germany - 99114263

Procurement Summary

Country : Germany

Summary : Low-Vibration Cryostat with Nanopositioners and Vector Magnet

Deadline : 19 Apr 2024

Other Information

Notice Type : Tender

TOT Ref.No.: 99114263

Document Ref. No. : 167050-2024

Competition : ICB

Financier : Self Financed

Purchaser Ownership : Public

Tender Value : Refer Document

Purchaser's Detail

Purchaser : TECHNISCHE UNIVERSITÄT MÜNCHEN
Town: München
NUTS-Code: DE212
Postal Code: 80333
Phone: +49 89 289 53650
Germany
Email :andreas.reiserer@tum.de

Tender Details

We explore two approaches for laser frequency stabilization that make use of novel frequency references, and which require a cryostat with specifications as outlined below. Approach 1 uses a fiber ring resonator on a vibration-isolating spool, while approach 2 uses waveguide ring resonators in erbium-doped silicon whose performance is enhanced by a reduction of the light's group velocity due to spectral hole burning in the inhomogeneous erbium absorption line. To serve this purpose, the cryostat will have to fulfill the following specifications. We require a base temperature of = 2 mW to maintain low T under optical and microwave driving, which is required for controlling the nuclear spin bath to decouple magnetic noise and improve the spectral hole properties. Efficient experimental work relies on frequent and rapid sample exchanges, so the cooldown of the sample inset must take 49.5 mm to hold the vibration-isolated fiber spool without prohibitive fiber bend loss. For efficient evanescent coupling between fibers and silicon ring resonators, the samples must be mounted on closed-loop XYZ sample positioners with a range of 3 mm in all directions, a positioning reproducibility of 100 nm and a load capacity of 100g to ensure reliable successful coupling. To this end, the vibrational stability between a rigid fiber mount (built by us) and the sample on the positioner must be lower than 1 nm in all spatial directions. The system must have at least 12 unoccupied, low-resista...
Document Type: Contract Notice
Reference Number: 025/2024
Contract Type: supplies
Authority Type: ra
Doc Title: Low-vibration cryostat with nanopositioners and vector magnet
Dispatch Date: 2024-03-19
Publish Date: 2024-03-20
Submission Date: 2024-04-19

Documents

 Tender Notice