The GPD, IPD, and CPD family of laser diode modules offer high-stability Automatic Power Control (APC) for laser diodes without internal photodiodes. They feature wavelengths of 405 – 520 nm with 1 mW – 50 mW of output power. The 520 nm is a cost-effective alternative for DPSS green lasers at 532 nm.

The GDP, IPD, and CPD modules improve stability for laser diodes without an internal photodiode by adding an external photodiode to the TO-Can. This configuration allows for APC mode of operation, which is often not available on a majority of competing DPSS lasers at these wavelengths.