Apologies Martin I have only seen this message now.
Tous les porte-aéronefs en France de 1912 à nos jours. This covers all French aircraft carriers and has a good few external photos and detailed information on CDG's air wing. It also has a useful silhouette drawing of her island superstructure identifying all the radars and satcom domes etc. It is all in French mind you, but the images speak for themselves really.
https://www.avions-bateaux.com/produit/marines-du-monde/4396Le Charles De Gaulle En ActionThis shows her operations in detail but does not have a huge number of external photos useful for modelling. Does have several closeups of her air wing and weathering details to her deck etc. Many photos are of her interiors though and of no use really for modelling. And again it is all in French.
https://www.amazon.co.uk/Charles-Gaulle-en-action/dp/2357431326