Abstract

Guided optimization of a good starting design can lead to a final design that can be reverse engineered. We apply this to a wide bandpass filter and indicate its deposition with optical monitoring.

© 2013 Optical Society of America

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References

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  1. J. Rancourt, Optical Thin Films User Handbook (SPIE Optical Engineering, 1996), Chap. 4.
  2. A. Thelen, Design of Optical Interference Coatings (McGraw-Hill, 1989).
  3. H. A. Macleod, Thin-Film Optical Filters, 3rd ed. (Institute of Physics, 2001), Chap. 7.
  4. L. Drissen, A. Alarie, T. Martin, D. Lagrois, L. Rousseau-Nepton, A. Bilodeau, C. Robert, G. Joncas, and J. Iglesias-Páramo, “Ground-based and airborne instrumentation for Astronomy IV,” Proc. SPIE 8446, 84463S (2012).

2012 (1)

L. Drissen, A. Alarie, T. Martin, D. Lagrois, L. Rousseau-Nepton, A. Bilodeau, C. Robert, G. Joncas, and J. Iglesias-Páramo, “Ground-based and airborne instrumentation for Astronomy IV,” Proc. SPIE 8446, 84463S (2012).

Alarie, A.

L. Drissen, A. Alarie, T. Martin, D. Lagrois, L. Rousseau-Nepton, A. Bilodeau, C. Robert, G. Joncas, and J. Iglesias-Páramo, “Ground-based and airborne instrumentation for Astronomy IV,” Proc. SPIE 8446, 84463S (2012).

Bilodeau, A.

L. Drissen, A. Alarie, T. Martin, D. Lagrois, L. Rousseau-Nepton, A. Bilodeau, C. Robert, G. Joncas, and J. Iglesias-Páramo, “Ground-based and airborne instrumentation for Astronomy IV,” Proc. SPIE 8446, 84463S (2012).

Drissen, L.

L. Drissen, A. Alarie, T. Martin, D. Lagrois, L. Rousseau-Nepton, A. Bilodeau, C. Robert, G. Joncas, and J. Iglesias-Páramo, “Ground-based and airborne instrumentation for Astronomy IV,” Proc. SPIE 8446, 84463S (2012).

Iglesias-Páramo, J.

L. Drissen, A. Alarie, T. Martin, D. Lagrois, L. Rousseau-Nepton, A. Bilodeau, C. Robert, G. Joncas, and J. Iglesias-Páramo, “Ground-based and airborne instrumentation for Astronomy IV,” Proc. SPIE 8446, 84463S (2012).

Joncas, G.

L. Drissen, A. Alarie, T. Martin, D. Lagrois, L. Rousseau-Nepton, A. Bilodeau, C. Robert, G. Joncas, and J. Iglesias-Páramo, “Ground-based and airborne instrumentation for Astronomy IV,” Proc. SPIE 8446, 84463S (2012).

Lagrois, D.

L. Drissen, A. Alarie, T. Martin, D. Lagrois, L. Rousseau-Nepton, A. Bilodeau, C. Robert, G. Joncas, and J. Iglesias-Páramo, “Ground-based and airborne instrumentation for Astronomy IV,” Proc. SPIE 8446, 84463S (2012).

Macleod, H. A.

H. A. Macleod, Thin-Film Optical Filters, 3rd ed. (Institute of Physics, 2001), Chap. 7.

Martin, T.

L. Drissen, A. Alarie, T. Martin, D. Lagrois, L. Rousseau-Nepton, A. Bilodeau, C. Robert, G. Joncas, and J. Iglesias-Páramo, “Ground-based and airborne instrumentation for Astronomy IV,” Proc. SPIE 8446, 84463S (2012).

Rancourt, J.

J. Rancourt, Optical Thin Films User Handbook (SPIE Optical Engineering, 1996), Chap. 4.

Robert, C.

L. Drissen, A. Alarie, T. Martin, D. Lagrois, L. Rousseau-Nepton, A. Bilodeau, C. Robert, G. Joncas, and J. Iglesias-Páramo, “Ground-based and airborne instrumentation for Astronomy IV,” Proc. SPIE 8446, 84463S (2012).

Rousseau-Nepton, L.

L. Drissen, A. Alarie, T. Martin, D. Lagrois, L. Rousseau-Nepton, A. Bilodeau, C. Robert, G. Joncas, and J. Iglesias-Páramo, “Ground-based and airborne instrumentation for Astronomy IV,” Proc. SPIE 8446, 84463S (2012).

Thelen, A.

A. Thelen, Design of Optical Interference Coatings (McGraw-Hill, 1989).

Proc. SPIE (1)

L. Drissen, A. Alarie, T. Martin, D. Lagrois, L. Rousseau-Nepton, A. Bilodeau, C. Robert, G. Joncas, and J. Iglesias-Páramo, “Ground-based and airborne instrumentation for Astronomy IV,” Proc. SPIE 8446, 84463S (2012).

Other (3)

J. Rancourt, Optical Thin Films User Handbook (SPIE Optical Engineering, 1996), Chap. 4.

A. Thelen, Design of Optical Interference Coatings (McGraw-Hill, 1989).

H. A. Macleod, Thin-Film Optical Filters, 3rd ed. (Institute of Physics, 2001), Chap. 7.

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Figures (7)

Fig. 1.
Fig. 1.

Stop band suppression in a SWP design. The addition of two relatively thin intrastack AR layers (ar and ar) at each thick H and L layer interface virtually completely suppresses the naturally occurring stop band at about 400 nm without significantly impacting the performance elsewhere.

Fig. 2.
Fig. 2.

(a) Stop band locations for a nominal and modified SWP designs. Solid curve: original SWP. Dotted curve: with AR treatment. Dashed curve: thick layers shifted to get original wavelength centering. (b) Effect of intrastack AR (ar and ar) treatment on stop band of a single SWP stack plotted on a log scale. Curve representations are the same as in panel a.

Fig. 3.
Fig. 3.

Calculated transmission of the complete filter. The substrate is assumed nonabsorbing. Coatings are deposited on both the front and the rear surfaces of the substrate.

Fig. 4.
Fig. 4.

Envelopes of the performance extrema for 2.5% standard deviation random thickness variations of all layers. The nominal curve is shown as a solid line.

Fig. 5.
Fig. 5.

Histograms of the layer physical thicknesses. The material codes are H and L for tantala and silica, respectively. (a) Front surface stack and (b) rear surface stack.

Fig. 6.
Fig. 6.

Calculated transmission in the short and long wavelength transition regions. The slope steepness (S) is given for each curve, along with the repeat factor.

Fig. 7.
Fig. 7.

Illustration of the front side filter stack optical monitoring for the first seven positions of the test slide. The monitoring termination condition for each evaporated layer is indicated and labeled from (1) to (18).

Tables (2)

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Table 1. Specifications for a Broad Band Transmission Filter with UV and IR Blocking

Tables Icon

Table 2. Layer Specification of Final Designa

Equations (3)

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Air | AR1SWP(800nm)AR2SWP(900nm)SWP(1000nm)|Substrate,
Air|AR1(LH)10LAR2(0.5Lar3Har30.5L)8(0.5Lar4Har40.5L)12|Substrate.
Glass substrate|ar4Har40.5L0.5Lar3Har30.5L0.5LHL|Air.

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