Rami Arieli: "The Laser Adventure" Chapter 6.1.9 Chemical Laser, page 4
Advantages of Chemical Lasers: The atmosphere is more transparent to the emitted spectrum out of DF lasers than for HF lasers, so the DF laser is more developed, although its efficiency is lower, and the price of the Deuterium isotope is higher.

Disadvantages of Chemical Lasers: