An adjustable, precision beamsplitter( for serious holography and interferometry. Internal wave plate and cube beamsplitter divide an incoming polarized laser beam into S and P component beams. Rotate the entry and exit ports to fine-tune output to ANY combinatic of polarization type and intensity. Uses 10 mm polarizing beamsplitte cube and three 10 mm dia. 1/2 wave plates. Mounts on standard 1/4-20 posts. Removable top plate allows access to polarizing cube for change to an 10 mm cube for other wavelengths. Models with mica 1/2 wave plates an quartz 1/2 wave plates are available. * Specify wavelength and laser power

AIR SLIT

Series 2000 Air Slites are available from 50 to 500 micron slit width. Each slit is micro machined in a 3/8 inch diameter disc of 25 micron (.001 inch) thickness and 3 mm-6 mm in length. The tolerances are +/-5%.

Part#       Size               (micron) Part#       Size               (micron) AS-50        50 AS-75        75 AS-50        100 AS-50        200 AS-300        300 AS-400        400 AS-500        500

What it does:
1. Splits an incident Polarized beam into two transmitted beams whose intensity ratio may be continuously varied.

2. Changes the two output beams to S polarization (perpendicular) and/or P polarization (parallel) as you wish.

Its use:
1. Used as a beam splitter in Holography for adjustable intensity ratio and fringe stability.

2. Used for precision interferometry Applications.

3. General Laser/Optical Laboratory Application.

4. Used as Laser Q-switches, but only for low power lasers.

How it works:
         A rotating quartz half-wave plate(A) is placed at the incident polarized laser beam. The polarizer cube (with two pairs of right angle prisms and a multi layer dielectric firm in between) deviates the S polarized light (B) by 90^o, while transmitting polarized light (C).

        The half-wave plate (A) is used to rotate the polarization for S and P polarization. This controls the intensity.

        The reflected and transmitted light beams from the beam-splitter cube may be changed to either S or P polarized light by rotating the half-wave plates at B and C.

Specifications:
1. Housing-post mounted (1/4-20  threads)
    a. Width (2.000" x 2.000") or (50.8mm x 50.8 mm)
    b. Height (2.000") or (50.8mm)
    c. Plate Carrier Diameter  (0.75")  or (19.05 mm)
    d. Aperture Diameter (0.400") or  (10.17 mm)

2. Half-Wave Plates
    a. Total of 3 (l0mm diameter)
    b. Quartz Half-Wave Plates
         I. Tenth Wave Surface (1/10)
         II. Antireflectant Coating

3. PolarizingCube (two right angle prisms)
    a. BK 7: grade A fine annealed (IR is Silica)
    b. Antireflectant Coating: 0.25%- all sides
    c. Glass Quality: 40-20  scratch and dig  
    d. Wavefront Distortion:   <wavelength/2 at 633 nm
    e. Flatness: 1/10 wave

4. Overall specifications:
    a. Principal Transmittance:
        I.> 98% for P-polarization
        II. <2% for S-polarization
    b. Principal Reflectance
        I.> 98% for S-polarization
        II. <2% for P-polarization
    c. Beam Deviation: <3 arc mm

5. Comes with the following:
    a. Hard carrying case
    b. Base support
    c. Post and Post holder (specify size)

* Optics are interchangeable for different wavelengths.