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Gain chip is identical to laser diode chips except that they have a deep anti-reflective coating on one or both facets, which raises or eliminates the threshold of self-lasing.

Gain Chip is used as a gain medium for Single FBG Lasers or Externally Tunable Cavity Lasers. Inphenix offers a standard gain chip per our datasheet requirements as well as custom gain chip.

The broadband gain chip is a superluminescent semiconductor diode that serves as both a broadband light source and a frequency-agile gain medium, is at the heart of the external-cavity laser.