Realisations d’empilements de couches minces diélectriques d’épaisseurs quelconques; utilisation d’un calculateur analogique

R. Badoual; P. Giacomo

doi:10.1364/AO.5.000063

Applied Optics
Vol. 5,
Issue 1,
pp. 63-67
(1966)
•https://doi.org/10.1364/AO.5.000063

Realisations d’empilements de couches minces diélectriques d’épaisseurs quelconques; utilisation d’un calculateur analogique

R. Badoual and P. Giacomo

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R. Badoual and P. Giacomo, "Realisations d’empilements de couches minces diélectriques d’épaisseurs quelconques; utilisation d’un calculateur analogique," Appl. Opt. 5, 63-67 (1966)

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Abstract

The preparation of dielectric multilayer coatings of nonequal thicknesses poses a problem of close control. The procedures of optical control of the coating itself (measurement of R or T extremes of R or T zeros of dR/dλ, usually reserved for λ/4 stacks) may also be used here; a preliminary study with the aid of an analog computer allows one to foresee progressively the different stages and to choose for each of the layers, the most precise method. The experimental results agree with the predicted.

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	S Zn I	Na₃ Al F₆ II	S Zn III	Na₃ Al F₆ IV	S Zn V
longueurs d’onde de contrôle:	4733 Å	4700 Å	4940 Å	5762 Å	5762 Å
type de contrôle:	maximètre	maximètre	maximètre	galvanomètre	galvanomètre
nature du contrôle:	1 maxi	1 maxi	1 mini	maximum	direct
	1 mini	1 mini	1 maxi
		T final 96%	T de 95% à 76%	T de 80% à 96%	T de 96% à 53%

	S Zn I	Na₃ Al F₆ II	S Zn III	Na₃ Al F₆ IV	S Zn V	Na₃ Al F₆ VI	S Zn VII
longueurs d’onde de contrôle:	4647 Å	6111 Å	4888 Å	6875 Å	6111 Å	5000 Å	5000 Å
type de contrôle:	maximètre	galvanomètre	maximètre	galvanomètre	galvanomètre	galvanomètre	galvanomètre
nature du contrôle:	1 maxi	T direct	1 mini	1 maximum	1 minimum	1 maximum	T direct
	1 mini		1 maxi
		T initial 81%	T initial 94%	T initial 44%	T initial 82%	T initial 51%	T initial 73%
	T final 95,6%	maximum 96,6%	T final 81%	T final 64%	T final 31%	T final 73%	T final 24%
		T final 87%

	S Zn I	Na₃ Al F₆ II	S Zn III	Na₃ Al F₆ IV	S Zn V
longueurs d’onde de contrôle:	4733 Å	4700 Å	4940 Å	5762 Å	5762 Å
type de contrôle:	maximètre	maximètre	maximètre	galvanomètre	galvanomètre
nature du contrôle:	1 maxi	1 maxi	1 mini	maximum	direct
	1 mini	1 mini	1 maxi
		T final 96%	T de 95% à 76%	T de 80% à 96%	T de 96% à 53%

	S Zn I	Na₃ Al F₆ II	S Zn III	Na₃ Al F₆ IV	S Zn V	Na₃ Al F₆ VI	S Zn VII
longueurs d’onde de contrôle:	4647 Å	6111 Å	4888 Å	6875 Å	6111 Å	5000 Å	5000 Å
type de contrôle:	maximètre	galvanomètre	maximètre	galvanomètre	galvanomètre	galvanomètre	galvanomètre
nature du contrôle:	1 maxi	T direct	1 mini	1 maximum	1 minimum	1 maximum	T direct
	1 mini		1 maxi
		T initial 81%	T initial 94%	T initial 44%	T initial 82%	T initial 51%	T initial 73%
	T final 95,6%	maximum 96,6%	T final 81%	T final 64%	T final 31%	T final 73%	T final 24%
		T final 87%

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Applied Optics