I have that issue, it has been one of my favorites since I was 14, when it was published - I've kept it (and all the others from the 80's) ever since, and know exactly which book shelf it is on. And yes I do remember that pic quite well.
Also, if anyone has Nat Geos from the late 60's -early 70's (I think, but couldn't swear to it, that the year was 1969), they also had an article and pics about lasers back then. Same sort of thing as this 84' one, but just longer ago. I also have that issue (no surprise there). I'd have to go find it to get the exact year and month, though.