Sharp 395nm 300mw Violet Laser Diode GH0393AA2G Multi-mode UV Laser Diode. The main specs are as following:

Wavelength (Peak) Po=300mW 395nm
Output [Max]- 300mW [350mW]
Threshold current – 150mA
Operating current Po=300mW 310mA
Operating voltage Po=300mW 4.4V