Quasi-monolithic heterodyne laser interferometer for inertial sensing.
Opt Lett
; 47(19): 5120-5123, 2022 Oct 01.
Article
en En
| MEDLINE
| ID: mdl-36181201
ABSTRACT
We present a compact heterodyne laser interferometer developed for high-sensitivity displacement sensing applications. This interferometer consists of customized prisms and wave plates assembled as a quasi-monolithic unit to realize a miniaturized system. The interferometer design adopts a common-mode rejection scheme to provide a high rejection ratio to common environmental noise. Experimental tests in vacuum show a displacement sensitivity level of 11p m/H z at 100m H z and as low as 0.6p m/H z above 1p m. The prototype unit is 20m m×20m m×10m m in size and weighs 4.5g, allowing subsequent integration in compact systems.
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01-internacional
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MEDLINE
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En
Revista:
Opt Lett
Año:
2022
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Article