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Knight Optical's Calomel (mercurous chloride) infrared crystal polarisers are available as Glan-Foucault and Wollaston type. Calomel exhibits strong birefringence (Δn=0.683) and has an excellent extinction ratio (>1:10000), making it an ideal material for polarisation applications. Calomel positively transmits from 0.38µm through to 17µm, however it is ideal for applications requiring polarisation within the mid-IR (5-17µm).

 

The Wollaston polariser has two orthogonally polarised outputs (e-ray and o-ray) with a separation angle of 14°. 

 

The Glan-Foucault polariser transmits the positively polarised o-ray. 

 

The polarisers are mounted in 360° rotational mounts for better handling and aligment.

Material:
Dimension tolerance:
Flatness:
Coating:
Mount:
Scratch/dig:

Calomel
±0.2
< 0.3λ
Uncoated
Mounted
< 40/20

15x15mm apertures are available.

AR coatings for 3-5µm and 8-10µm wavebands are available. 

Enquire for further information. 

Calomel Wollaston Polariser

Calomel wollaston polariser

Calomel Glan-Foucault Polariser

Calomel Glan-Foucault Polariser

 

2 Items

Name Type Length (mm) Width (mm) Coating Separation angle (°) Price Buy
CCP1011 Glan-Foucault 10 10 Uncoated -
$2,349.10
CCP1010 Wollaston 10 10 Uncoated 14
$2,050.25

2 Items

1

Calomel Infrared Polarisers

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