This is no doubt the best book of 2021 if you are anywhere near interested on Lasers.
Great book by the great Ursula Keller.
This book is a blast!
https://link.springer.com/book/10.1007/978-3-030-82532-4#toc
Our best book choice of 2021
Towards future extreme environment resistant nanophotonics
Light-matter interactions and Extreme Application Photonics Laboratory 