Compare Model Drawings, CAD & Specs Availability Price
glan-thompson calcite polarizer model 10gt04
10GT04
Polarizer, Glan-Thompson Calcite, 25.4 mm Diameter, Uncoated
$1,059
10GT04 Polarizer, Glan-Thompson Calcite, 25.4 mm Diameter, Uncoated $1,059
glan-thompson calcite polarizer model 10gt04
10GT04AR.14
Polarizer, Glan-Thompson Calcite, 25.4 mm Diameter, 430 to 700 nm
$1,132
10GT04AR.14 Polarizer, Glan-Thompson Calcite, 25.4 mm Diameter, 430 to 700 nm $1,132
glan-thompson calcite polarizer model 10gt04
10GT04AR.16
Polarizer, Glan-Thompson Calcite, 25.4 mm Diameter, 650 to 1000 nm
$1,132
10GT04AR.16 Polarizer, Glan-Thompson Calcite, 25.4 mm Diameter, 650 to 1000 nm $1,132
glan-thompson calcite polarizer model 10gt04
10GT04AR.18
Polarizer, Glan-Thompson Calcite, 25.4 mm Diameter, 1000 to 1550nm
$1,132
10GT04AR.18 Polarizer, Glan-Thompson Calcite, 25.4 mm Diameter, 1000 to 1550nm $1,132

Specifications

  • Diameter
    1 in. (25.4 mm)
  • Material
    Optical Grade Calcite
  • Extinction Ratio
    100,000:1
  • Damage Threshold
    1 W/cm2 CW, 0.1 µJ/cm2 with 10 nsec pulses, typical
  • Surface Quality
    20-10 scratch-dig
  • Clear Aperture
    10.0 mm
  • Diameter Tolerance
    ±0.25 mm
  • Transmitted Beam Deviation
    <3 arc min
  • Acceptance Angle
    14°–16°, full angle
  • Wavefront Distortion
    ≤λ/4 at 632.8 nm over the full aperture
  • Maximum Temperature
    90°C

Features

Glan-Thompson Polarizer Construction

Our Glan-Thompson polarizers are fabricated using two matching select-grade calcite prisms with their hypotenuses cemented to one another to form a rectangular optic. The cemented prism pair is assembled into a black anodized aluminum housing. The housing is marked to indicate the polarization axis of the transmitted beam. The rejected component of the beam is totally internally reflected and eventually absorbed by the anodized aluminum walls of the housing.

How Glan-Thompson Calcite Polarizers Work

Glan-Thompson prisms are formed using two identical calcite prisms with hypotenuses cemented to one another to form a surface that efficiently transmits one polarization state specifically. The prisms have the same optical axis orientation as one another, which is perpendicular to the plane of reflection (the shared hypotenuse). Light that is s-polarized with respect to the reflective hypotenuse experiences the higher ordinary refractive index of calcite. As calcite has a large index difference between extraordinary and ordinary rays, the polarizer has a fairly wide range of acceptance angles that result in transmission of only highly pure s-polarized light. Thus Glan Thompson prisms have a wide usable acceptance angle and are especially well suited for use with diverging and converging beams.

Excellent Optical Properties

Our Glan-Thompson Calcite Polarizers are designed to meet the most demanding applications that require high purity linear polarization. Constructed of optical grade calcite, which features excellent optical properties, including an extinction ratio of greater than 100,000:1, they have a high damage threshold of 1 W/cm2 CW, 0.1 µJ/cm2 with 10 nsec pulses, typical, and precision surface quality of 20-10 scratch-dig. Available uncoated or with AR coatings for the visible and NIR regions, these polarizers transmit S-polarization with Ts>90% and reject P-polarization to be absorbed within the polarizer housing.

Stage Mounting

The Glan-Thompson polarizer has a black anodized aluminum housing. The knurled ring at the center of the housing will unscrew to yield a 1.063-20 thread. This thread conveniently screws into Newport's popular rotation stages such as 481-A, M1-1PR, RSP-1T, GM-1RA, and AG-PR100 to mention a few. 

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