By the way, this seems to be a cleaned-up version, compared to the abstract and first section of this paper I found on viXra.
Looking through his history, it seems that Miroslaw Kozłowski has a long history in laser research, though, being a layman in that area, I cannot judge the quality of his work. Since at least 1995, he has been working with a Janina Marciak-Kozłowska, presumably his wife. In recent years, the two have branched out into quantum woo and paranormal biology crackpottery, apparently by way of working on lasers in cancer treatment, although they also seem to continue to work on lasers.
The entire time, he wrote in competent English. This even includes, some missing punctuation, a paper from last month. Even the main body of this paper, even in the viXra version, is in pretty good English. The abstract, introduction and conclusion, however, demonstrate a far worse grasp on English. It seems like he may have suffered some form of brain damage recently, which would make this rather sad.