DHI Faraday Optical Isolators

Six Faraday isolator configurations are listed by operating wavelength. Individual source cards state clear aperture, isolation and damage threshold, but no formal data sheet or test conditions is supplied. The red housing photograph is reused across models and its engraving does not always match the selected option. Check the card for the chosen SKU and resolve discrepancies before ordering.

Models and operating wavelengths

The six SKU cards state operating wavelengths of 1045, 850, 1030, 1064, 1053 and 638 nm. Several reuse a photograph engraved 1064 nm; that engraving does not identify the other configurations. The source calls these Faraday isolators and mentions polarization without specifying polarization dependence, axis orientation or required input polarization.

Clear aperture and isolation

The 1045, 1030, 1064 and 1053 nm cards state a 3.5 mm clear aperture and isolation >35 dB. The 850 and 638 nm cards state 5 mm and >30 dB. For DHI-1030-5.0, the model suffix conflicts with the stated 3.5 mm aperture. This discrepancy is retained for supplier confirmation rather than changed to 5 mm.

Damage threshold and test conditions

The four near-infrared cards list a damage threshold of 7 J/cm²; the 850 and 638 nm cards list 3 J/cm². These are source claims without pulse duration, repetition rate, beam size, test method or certification. They cannot establish CW power, peak power or an operating limit for a particular setup. Insertion loss, transmission and usable bandwidth are unspecified.

Mounting and delivery

Photographs show a red housing, silver end sections and an integral mounting foot. Material grade, envelope dimensions, optical-axis height, mounting interfaces and the defined transmission direction are not provided. Reused photographs engraved φ3.5 mm @1064 nm are series references. The source advertises a four-week lead time and custom sizes; confirm current delivery and customization terms. No separate custom SKU is listed.

Selection checklist

Complete model and operating wavelength

Clear aperture and the 1030 discrepancy

Isolation and test conditions

Polarization, mounting interface and delivery

To be confirmed

Bandwidth, insertion loss and input polarization requirements

Damage-threshold test conditions

Mounting dimensions, axis height and direction

1030 aperture and current lead time