Evaluation of enhanced mirror for LMJ reflector industrial production

Hervé Piombini; Frédéric Sabary; Daniel Marteau; Philippe Voarino; Grégory Chauveau; Hélène Krol; Nathalie Valette; Catherine Grèzes-Besset

doi:10.1364/AO.53.00A305

Applied Optics
Vol. 53,
Issue 4,
pp. A305-A313
(2014)
•https://doi.org/10.1364/AO.53.00A305

Evaluation of enhanced mirror for LMJ reflector industrial production

Hervé Piombini, Frédéric Sabary, Daniel Marteau, Philippe Voarino, Grégory Chauveau, Hélène Krol, Nathalie Valette, and Catherine Grèzes-Besset

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Hervé Piombini, Frédéric Sabary, Daniel Marteau, Philippe Voarino, Grégory Chauveau, Hélène Krol, Nathalie Valette, and Catherine Grèzes-Besset, "Evaluation of enhanced mirror for LMJ reflector industrial production," Appl. Opt. 53, A305-A313 (2014)

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Abstract

The possibility of enhanced mirrors for laser megajoule reflectors has been studied, and preliminary samples have been realized with magnetron sputtering technology. Spectral measurements of improved reflectivity and cosmetics analysis are presented.

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Stack	Bottom (%)	Shape Top (%)	Shape Bottom (%)
Silver	100	100	100
Adhesion layer	95	100	72
High index	87	100	80
Low index	74	100	108
High index	91	100	88

Stack	Bottom (%)	Shape Top (%)	Shape Bottom (%)
Silver	100	100	100
Adhesion layer	90	100	75
High index	83	100	100
Low index	74	100	74
High index	80	100	93

Materials	Sample	Total Defects Number	Defects Average Size in μ ${μm}^{2}$	Defects $< 5 {μm}^{2}$ in %	Size Maxi in ${μm}^{2}$	Defects Surface in ‰	Defects Surface in ‰
A-type CILAS	A36	152 026	2.83	75.1	2 770	0.42	0.39
	A43	168 247	3.10	70.5	4 595	0.49
	A88	109 007	2.56	74.4	2 485	0.26
B-type CILAS	A95	91 852	3.30	68.2	4 255	0.29	0.38
	A140	119 663	3.36	69.5	1 005	0.38
	A180	171 361	2.91	75.9	10 140	0.47
DP 650 CEA/LR	19-04-11 a	101 426	3.63	80.0	1 805	0.35	0.27
	20-04-11 a	126 824	2.35	76.9	2 345	0.28
	22-04-11 a	57 977	3.10	73.2	2 165	0.17

Stack	Bottom (%)	Shape Top (%)	Shape Bottom (%)
Silver	100	100	100
Adhesion layer	95	100	72
High index	87	100	80
Low index	74	100	108
High index	91	100	88

Stack	Bottom (%)	Shape Top (%)	Shape Bottom (%)
Silver	100	100	100
Adhesion layer	90	100	75
High index	83	100	100
Low index	74	100	74
High index	80	100	93

Abstract

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Tables (3)

Equations (1)

Applied Optics