Turning a solar power system into its own backup

We can break the 5500K temperature limit with passive elements and some clever engineering.

https://en.wikipedia.org/wiki/Solar-pumped_laser

https://ieeexplore.ieee.org/document/1553831

Maybe I missed it somewhere in the write up but in what way is the solar system its own backup? It seemed like the battery was just subbed for a combustion system using stored heat?

How is this different from Ivanpah?

REAL TLDR: Just Slap some gas generators onto the bad design and it'll work this time(tm)

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TLDR: it's a concentrated solar plant (field of mirrors shine light on a tower to boil water) with a backup system that boils the water by burning stuff.