Hamamatsu R6094, a head-on photomultiplier tube (PMT).
Laser-Driven Light Source (LDLS): EQ-400-RH-QZ-S
Laser-Driven Light Source (LDLS): EQ-77X-QZ-S
Laser-Driven Light Source (LDLS): EQ-99X-CAL-S
Laser-Driven Light Source (LDLS): EQ-99X-CAL-S
Laser-Driven Light Source (LDLS) EQ-99X-QZ-S