Lasers & Sources

Credit: Sheetak
FIGURE 1. Operating principle of a thermoelectric cooler based on the Peltier effect: When current flows through the semiconductor elements between ceramic substrates, heat is absorbed at the cold side and rejected at the hot side to create a controlled temperature differential across the device.
Thermoelectric coolers provide precision temperature control for lasers, detectors, and integrated photonics—where addressing thermal drift at the device level is essential.
Feb. 25, 2026

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