FULL CATALOG - Meadowlark Optics - #3

Beamsplitting Polarizers

Ream-plitting polarizer, divide unpolarized incident light into two orthogonal, linearly polarized beams. Low absorption coatings provide an excellent combination ul dama^i: resistance and extinction ml in ai a modcrale price. Rugged beamsplitter cubes arc easily mounted anil tbi' re to it- designed into many instrument

applications.

Beamsplitting polarizers offer the unique advantage of providing two linearly polarized output beams, one iran-nutiing si might through, t be second "splitting" nfi ai

precisely 90°.

(Calcite material exhibits exrrcnielv broadband transmission performance, from 320 ro 2300 nm. Meadowlark Optics offers Clan-Thompson calcite polarizers. Manufactured from tirade A optical calcite material, the design takes advantage of total internal reflection to separate the two polarization components. Glan-Thompsnn Polarizers me recommended where a larger acceptance angle is important for overall system performance. 1 Inwevcr, tbe cemented construction limits both power handling anil ullrm inlet performance. Wire grid polarizers ( Versai.ight) can handle relatively high power- and aie lugged when coaled, '['lies olicr high coni rasi aerow huge Seel ion- ol ihc Vi-iblc and Near Infra-Red Spectrum.

Specially selected ultraviolet transmissivematerial is available on a custom basis. Please contact the Meadowlark Optics Sale- Department for assistance. Polarizer and Retarder References:

1. J.M. Bennett, "Pi ilari nil inn." in I imi,Ih,::ih u/Optics, «litui by M. Bass, (McGraw-Hill, New Yoik, 1995), Vol. I, Chap. 5; J.A. Dohrowolska, "Opiical Prupenics of Films and Coatings," ibid., Vol. J, Chap. 42: J.M. Rctmett, "Polarizers," ibid., Vol. 1!, Chap. 3; S. Wu, "Liquid Crystals," ibid., Vol. II, Chap. 14.

2. D. Clarke and J.P. Orainycr, fthrized L^t and Optical Meaiureme.it, (Pergamon Press, New York, 1971).

3. D.S. Kliger, j.W. Lewis, and CE. Randall, Polarized Light m Opncsand Specnwuiiv. IA cadi mie Press, San Diego, Calif.,

1990).

4. WA. Shi irci ili', /'i.lmied Ligia: l'nxliiahm .aid L'.w, (Harv;itil University Press, ( juiih-idrje. Mass., 1966).

5. D.A. Holmes, "Exan Theory ol Ria ai-, la tino Plates,"]. Opt. Soc. Am. 54,1115(1964).

6. P.D. Hale and CAY. 1 lav. "St ahi iiy ol Pare diligent Linear Retarders (Waveplates)," Appi. Opt. 27 (24), 5146 ¡1988).

7. Li. Malaear.i. ( Iptie.a si's;); if,il-.;, y hil111 Wiley and Sons. New York, 1978).

S. C. Love, "Wave-tinia Correction and ProJaction ol /en like Modes with a Liquid-Crystal Spatial Light Modulatili", Appi. Opt. 36 (7),1517 (1997)

2-2 R^ms/,iirrau: ivjia^s.-rs tu." i.ri)'.^.M',ii'i\- l'i.la'^-, a

K.ims. mmeru.'wis squared ri-.- e?;"¹-

When necessary, the extinction ratio of the reflected beam can be drainai icalh improved bv additif a dicbrnic

polarizer to the output face.

Meadowlark Opi ics oiler- bolli Laser Line and Broadband Beamspliiting Polarizers, covering visible to near infrared applications.

Laser Line Beam-phi any Polarizers otter tbe advantage of V-type antireflcc.tinn coating, improving efficiency by limiting surface losses. Rrnailband beamsplitting Polarizers can lie moiv versatile lor i unable wavelength or broadband sources. Calcite Polarizers

Calcite is a naturally-occurring hirelringent crystal with excellent polarization properties including very high extinction ratio and nan-mis-.ii in efficiency. Aperture sizes an' limited, since large opi ically uniform pieces of this natural crystal are rare.

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