WPQ05M-1550 – �1/2″ Zero-Order Quarter-Wave Plate, �1″ Mount, 1550nm
***MPN WPQ05M-1550
***OEM Thorlabs
***SKU*** 57774

Unit is a Newport 10RP32-532 zero-order precision wave plate.
Specifications:
-Diameter 25.4mm
-Wavelength: 532nm
-Thickness: 6.35mm..

Manufactures description:

The 10RP32-532 True Zero-Order Wave Plate consists of a birefringent polymer film cemented between two high-precision, high efficiency, broadband antireflection coated BK 7 windows. This construction ensures excellent transmitted 532 nm wavefront quality and /2 retardation, while minimizing beam deviation and surface reflection losses. The assembly is mounted in a 25.4 mm outer diameter black anodized aluminum housing for protection and ease of mounting and has a 17.8 mm clear aperture. The wave plate fast axis marked for alignment reference. Polymer wave plates offer benefits over quartz wave plates such as better angular acceptance and less sensitivity to wavelength change. Polymer wave plates have excellent angular field of view. Retardation changes by less than 1% over a �12� incidence angle. The polymer material has very low birefringence that is nearly constant with wavelength..

***MPN 10RP32 -532
***OEM Newport Research Corp (NRC)
***SKU*** 28354

We are not sure of the manufacturer of this item � it has no maker�s markings anywhere.
We suspect Wollaston may be the manufacturer.

This is a holder with a calcite prism installed. It splits an incident laser beam (shown in the photos with a small HeNe laser) into two beams perpendicularly polarized to each other. One beam appears to be much more divergent than the other, but this was not tested on an optical bench so no measurements were made. However, the beam that is �single� seems to process about the beam with the ghost images. I am not sure if the prism is a single oriented crystal of Calcite, or if it is actually a type of Wollaston prism. As can be seen in the third photo, the beam is split into two primary beams, one of which has the ghost reflections. I took additional photos with a polarizer alternately blocking the primary beam, and after a 90-degree rotation, the secondary (extraordinary) beam.

The cell mounting for the prism is 1 inch in diameter, not including the cap. The larger aperture on the smaller diameter side is about 5mm, that of the �cap� only about 3mm. There are two scribe marks on the cap which I would have thought indicated the permitted vibration directions of each beam, but they appear to be turned relative to the plane of polarization (perhaps the holder for the cell has the matching indications similarly offset).

The holders and prisms appear to be in perfect condition. The prism has some sort of anti-reflective coating but I am not sure what it is, or if it is optimized for a particular wavelength region. The prism appears to be approximately 7 or 8 mm square, but I was unable to measure this since access to the prism is precluded by the cap.

BMI Surplus, Inc. has a huge inventory of used, new and pre-owned Laser Equipment for sale.
We will work with you individually to find the perfect set up for your application.
Buy online or give us a call at 781-871-8868. We have experienced customer service representatives standing by ready to help you!

BMI Surplus, Inc. is a dealer in used and sometimes new Surplus Scientific & Industrial Equipment – we cater to clients in search of items to be used for specific applications.
We do not offer a guarantee as many of our items are purchased by professionals in need of parts and pieces.
You will find many of our items listed on our website as untested or as parts or repair units even though they are in good used condition.
*Pricing on untested items is discounted at time of listing.

**Shipping, Handling & Freight fees are dependent on your location.
We will provide a freight quote to meet your individual needs and work with you if you prefer to use your own carrier.
We have 33 years of experience shipping sensitive scientific instruments & industrial equipment!!
***MPN
***OEM Brand Unmarked
***SKU*** DP097

Electro-Optics Technology, Inc. Faraday Isolator

6.5mm Aperture
***MPN
***OEM Electro-Optics Technology
***SKU*** 62416

Thorlabs SM1A8 – SM1-Compatible IR and Visible Alignment Disk
***MPN SM1A8
***OEM Thorlabs
***SKU*** 57706

OZ Optics Polaarization Rotator
half wave plate
1319 nm

***MPN FPR-01-33-1319-9/125-P-P-2
***OEM OZ Optics Ltd
***SKU*** 61208

4R1065 EOTech (4I1065 with Isolation Optics Removed is equivalent to 4R1065)

1065nm / 1 Micron / YAG Faraday Rotator for Free Space Optical Isolation

CA: 4mm Diameter
Material: (TGG) Terbium Gallium Garnet
Optical Pathlength Of Rotating Medium: 39mm
Transmission: 98%
Pulsed Damage Threshold 10nsec Pulse: 5J/cm2
***MPN 4I1065
***OEM Electro-Optics Technology
***SKU*** 61097

ALPHALAS PO-TWP-DW-2/1-25-UV
Broadband Mounted Tunable Dual-Wavelength True Zero-Order Phase Retardation Plate

Fundimental: 1/2 Wave
Second Harmonic: 1 Wave
Wavelength: 150 – 6000nm
CA: 24mm

Applications:
-Frequency Tripling
-Femtosecond Third Harmonic Generation
-Differential Polarization Rotation

Mechanical adjustments are perfect, the wave plate surface needs a very small amount of cleaning.
***MPN PO-TWP-DW-2/1-25-UV
***OEM ALPHALAS Gmbh
***SKU*** 61090

30mm Polarizing Cube Beamsplitter
Unknown Wavelength
Tested with HeNe, 1 arm was almost extinguished with polarization rotation, but the other would not.
***MPN
***OEM
***SKU*** 61042

Tested with HeNe
Unknown make Glan Taylor/Laser Polarizer
1″ Diameter x 1.75″
CA: 0.2″ Diameter

Polarizer is loose in its housing.

BMI Surplus, Inc. has a huge inventory of used, new and pre-owned Polarizers For Sale!
Buy online or give us a call at 781-871-8868. We have experienced customer service representatives standing by ready to help you!

BMI Surplus, Inc. is a dealer in used and sometimes new Surplus Scientific & Industrial Equipment – we cater to clients in search of items to be used for specific applications.
We do not offer a guarantee as many of our items are purchased by professionals in need of parts and pieces.
You will find many of our items listed on our website as untested or as parts or repair units even though in they are in good used condition.

**Shipping, Handling & Freight fees are dependent on your location.
We will provide a freight quote to meet your individual needs and work with you if you prefer to use your own carrier.
We have 32 years of experience shipping sensitive scientific instruments & industrial equipment.
We ship with the utmost care!!

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***MPN
***OEM
***SKU*** 61040

Tested with HeNe
Unknown make Glan Taylor/Laser Polarizer
1″ Diameter x 1.9″
CA: 0.25″ Diameter
***MPN
***OEM
***SKU*** 61039