Arthur Leonard Schawlow was a Nobel Prize-winning physicist best for his work on lasers. He was a devout Methodist
Arthur Schawlow told interviewers that he was a "fairly orthodox Protestant" who attends a Methodist church. When asked "Are you religious?", Arthur Schawlow replied (Denis Brian, ed. 1995. The Voice of Genius: Conversations with Nobel Scientists and Other Luminaries, Cambridge, Massachusetts: Perseus Publishing (1995), pages 241-242):
Yes, I was brought up a Protestant Christian and I've been in a number of denominations... I go to church, to a very good Methodist church.
From: Arthur L. Schawlow, Optics and Laser Spectroscopy, Bell Telephone Laboratories, 1951-1961, and Stanford University Since 1961, an oral history conducted in 1996 by Suzanne B. Riess (Interviewer/Editor), Regional Oral History Office, The Bancroft Library, University of California, Berkeley (1998)
I'm a fairly orthodox Protestant. I've been in a lot of Protestant churches... Recently my son and I both joined the Methodist Church in Paradise, California, and that's the only one I go to now... I think the world is too wonderful to have just happened. And I think that orthodox Christianity is a good conduct for life, and I hope it's true.