dude you really need to search this forum before askin your questions. This question has been asked and answered in multiple re-incarnations.
contrary to popular belief, a pulsed laser is not really necessarily "stronger" as it's pulsed. take the higher amount of energy and break it up into flashes. Oh sure the time that it does flash is higher. but then there is a off period where you have nothing.
There is absolutely no use in pulsing red or blue ray lasers. Optical failure is what kills them anyway, and pulsing does nothing to mitigate that at all. For the same average power output, pulsed operation makes things worse.
There can be a good reason to pulse DPSS lasers (green or blue) since the doubling process is non-linear, and can work much better on peaks than on average power input. In the past this approach was non unusual, but with the more recent improvements in dpss crystals there seems to be no need anymore.