Roughened quartz surfaces and Teflon as small angle diffusers and depolarizers between 200 and 400 nm

Robert D. Saunders; Henry J. Kostkowski

doi:10.1364/AO.28.003242

Applied Optics
Vol. 28,
Issue 15,
pp. 3242-3245
(1989)
•https://doi.org/10.1364/AO.28.003242

Roughened quartz surfaces and Teflon as small angle diffusers and depolarizers between 200 and 400 nm

Robert D. Saunders and Henry J. Kostkowski

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Robert D. Saunders and Henry J. Kostkowski, "Roughened quartz surfaces and Teflon as small angle diffusers and depolarizers between 200 and 400 nm," Appl. Opt. 28, 3242-3245 (1989)

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Abstract

Laboratory tests of transmission diffusers are reported for quartz and Teflon. These tests were conducted to select transmission diffusers for the NOAA rocket flight UV spectroradiometers.

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Diffuser type		Wavelength (nm)
		201	210	220	254	365
Quartz surfaces
1 side	8-μm pit size				7
	30				10
2 sides	8				21
	30				32
3 sides	8				57
	30				94
	100				159	135
Teflon sheet^a
0.031					1012	431
0.014		2301	1399	988	547
0.010		860	625		374	278
0.005		643	441		263
0.003					228

	Number of surfaces	Roughness (pit size) (μm)	Percent deviation
θ₂	Number of surfaces	Roughness (pit size) (μm)	254 nm	365 nm
±2°	${\begin{array}{l} None \\ 1 \\ 2 \\ 3 \end{array}$	—		−28.0
		8	−4.7	−5.0
		30	−4.3	−3.7
		8	−1.3	−2.8
		30	−1.0	−1.4
		8	−1.0	−1.1
		30	−0.1	−0.8
±5°	${\begin{array}{l} 1 \\ 3 \end{array}$	8	−19.0
		30	−21.0
		8	−5.0
		30	−3.3

Diffuser type	θ₁	Percent deviation
Diffuser type	θ₁	θ₂ = 2°	θ₂ = −1°
Quartz surfaces
3 sides/30 μm	2.9°(f/10)	−4.8	+2.2
3 sides/30 μm	4.3°(f/6.6)	−6.2	+3.0
3 sides/100 μm	4.3°(f/6.6)	−3.9	+1.6
Teflon sheet
0.010-in. thick	4.3°(f/6.6)	−0.9	+0.7
	5.0°(f/5.7)	−1.7	+1.5

Diffuser	Percent polarization responsivity
Diffuser	254 nm	365 nm
None	89	84
Quartz surfaces
8 μm
3 sides		81
30μm
3 sides	84	78
4 sides		72
100 μm
3 sides	52
Teflon sheet^a
0.031	4.3	3.5
0.014	5.7
0.01	43	1.2

Diffuser type		Wavelength (nm)
		201	210	220	254	365
Quartz surfaces
1 side	8-μm pit size				7
	30				10
2 sides	8				21
	30				32
3 sides	8				57
	30				94
	100				159	135
Teflon sheet^a
0.031					1012	431
0.014		2301	1399	988	547
0.010		860	625		374	278
0.005		643	441		263
0.003					228

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Applied Optics