https://frlaserco.com/+c6dd3d4e-4683-11ee-998c-001a4a050942/en
FBG-397-200-SM Fiber Bragg Grating Stabilized Laser Diode: 200mW, 397nm Precision
Discover the FBG-397-200-SM: A 200mW, 397nm fiber Bragg grating stabilized laser diode, offering unmatched precision and stability.
fiber bragg grating
https://www.ultralasers.com/index.php?route=product/product&path=45&product_id=214
100mW 397nm Violet laser
violetlaser