What is a good physics book to learn about laser cooling techniques?

That's a really great question. I assume you've checked Google Books and have seen the book Laser Cooling and Trapping (Graduate Texts in Contemporary Physics). However, that was published in 1999 and you are looking for something more recent. Looking at the public catalog of the U.S. Copyright Office for any registered copyrighted works containing the words "laser cooling" in the title (URL source below) it looks like anything recent is just research papers.

It doesn't look like anything you are looking for (at least in the English language) is more recent than 2003. In cases like this it makes me think maybe some of this kind of scientific research is being classified. Since cooling atoms down is one of the possible ways to achieve quantum computing/quantum cryptography it wouldn't surprise me if this was the case.