Mid-IR Faraday Optical Isolators

Our Mid-IR Faraday optical isolators act essentially as a uni-directional light valve. It is used to protect a laser source near 2050 nm or 4550 nm from destabilizing feedback or actual damage from back-reflected light.

2050 & 4550 nm Mid-IR center wavelengths
High Verdet constant
Low absorption coefficients
1/2 waveplate option (-W models)

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Description	Compatibility	Center Wavelength	Spectral Range	Transmission	Avail.	Price
ISO-FRDY-04-2050-N Mid-IR Faraday Optical Isolators Faraday Optical Isolator, Mid-IR, 4 mm Aperture, 2050 nm Center	UNIVERSAL	2050 nm	2000-2100 nm	>88&percnt;		$5,100
ISO-FRDY-04-4550-N Mid-IR Faraday Optical Isolators Faraday Optical Isolator, Mid-IR, 4 mm Aperture, 4550 nm Center	UNIVERSAL	4550 nm	4500-4600 nm	>65&percnt;		$7,500
ISO-FRDY-04-4550-W Mid-IR Faraday Optical Isolators Faraday Optical Isolator, Mid-IR, 4 mm, 4550 nm, 1/2 Waveplate, [DISCONTINUED]	UNIVERSAL	4550 nm	4500-4600 nm	>65&percnt;	Discontinued

Features

High Efficiency Performance

The YIG crystal utilized in our Faraday isolators creates a large Verdet constant that ultimately describes the strength of the Faraday effect and provides effective isolation of back-reflected light. Additionally, these isolators have low absorption as a function of the YIG crystal and polarizers, resulting in reliable transmission of light in the forward direction.

1/2 Waveplate Option

We offer versions with an added zero order 1/2 wave plate (-W models) at the output stage so that the direction of the output beam polarization can be rotated to a desired direction.