Meadowlark Optics, Precision Retarder, 1 In. Diameter, 1/2 Wave (nh-100-0633)

US $2500

  • Albuquerque, New Mexico, United States
  • May 31st
Condition: This unmounted half-wave retarder was purchased new in 2011 and has never been opened.  It remains in its original packaging, as received (see pictures)  Quantity:  You are bidding on one unmounted half-wave retarder. Original Cost: $475.00 Half-wave retarders are sometimes called polarization rotators. A half-wave retarder flips the polarization direction of incoming light about the retarder fast axis. When the angle between the retarder fast axis and the input plane of polarization is 45°, horizontal polarized light is converted to vertical. A half-wave retarder rotates a linear polarized input by twice the angle between the retarder fast axis and the input plane of polarization. A half-wave retarder can also be used to change the handedness of a left-circular polarized beam to right-circular polarized, or vice versa. A half-wave retarder is also conveniently used to change the polarization direction where mechanical rotation of a large laser is impractical. Part Number: NH-100-0633 Retarder Material Birefringent Polymer Substrate Material BK 7 Grade A, fine annealed Wavelength 632.8 nm Retardance Lambda/2 +/- Lambda/350 Wavefront Distortion <= Lambda/5 (transmitted, at 632.8 nm) Surface Quality 40-20 scratch and dig Beam Deviation <= 1 arc min Outside Diameter 1.000 +0/-0.010 in. Clear Aperture Central 0.80 in. diameter Outside surfaces antireflection coated to provide R <= 0.5% per surface at normal incidence over 400-700 nm  

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