Shine a helium‐neon laser at a crystal of barium titanate, and at first the beam merely passes through the crystal. After a few seconds, however, the incident beam begins to …
抄録< jats: p> Shine a helium-neon laser at a crystal of barium titanate, and at first the beam merely passes through the crystal. After a few seconds, however, the incident beam begins …
The photorefractive effect is caused when light strikes a crystal by impurities, vacancies, or defects that act within the crystal as charge donors and acceptors, thereby leading to a …