Fabrication of a glancing-angle-deposited distributed polarization rotator for ultraviolet applications

Oliver, James B.; Smith, Chris; Spaulding, John; Foster, Justin; Hoffman, Brittany N.; Papernov, Semyon; Kessler, Terry J.; MacNally, Sara

doi:10.1117/12.2312646

Title: Fabrication of a glancing-angle-deposited distributed polarization rotator for ultraviolet applications

Journal Article · Tue Jun 05 00:00:00 EDT 2018 · Proceedings of SPIE - The International Society for Optical Engineering

DOI:https://doi.org/10.1117/12.2312646· OSTI ID:1457134

Oliver, James B. ^[1]; Smith, Chris ^[1]; Spaulding, John ^[1]; Foster, Justin ^[1]; Hoffman, Brittany N. ^[1]; Papernov, Semyon ^[1]; Kessler, Terry J. ^[1]; MacNally, Sara ^[1]

Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics

Glancing-angle–deposited thin films are used to fabricate half-wave plates in a 1-D striped geometry, forming alternating regions of linearly polarized light on a single 100-mm-diam substrate. MgO is selected for fabricating the birefringent films for use in vacuum, based on its formation of isolated columns that avoid potential tensile-stress failure of the porous film. While large-area tests have shown high defect densities for fluences <10 J/cm², small-spot laser-damage testing has shown resistance to fluences up to 30 J/cm² (351-nm, 5-ns pulse). Here, an amorphous silica film is investigated to match the optical thickness in the intermediate regions in an effort to fabricate a polarization-control device to reduce focal-point modulation (“beam smoothing”) in high-intensity laser systems. Ongoing efforts to improve the laser-damage threshold and minimize optical losses caused by scatter are essential to realizing a practical device. Scalability of the process to meter-scale substrates is also explored.

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Research Organization:: Univ. of Rochester, NY (United States). Lab. for Laser Energetics

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0001944

OSTI ID:: 1457134

Journal Information:: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 10691; Conference: SPIE Advances in Optical Thin Films, Frankfurt (Germany), 14-17 May 2018; ISSN 0277-786X

Publisher:: SPIECopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 1 work

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References (5)

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