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LRS-9550 Fixture Temperature Range

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LRS-9550 Fixture Temperature Range

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The LRS-9550 High Power Laser Diode Test System houses up to 32 removable laser diode fixtures. Individual fixtures can be designed to hold between 4 and 16 laser diodes, depending on package geometry and thermal characteristics. On each fixture, six high-performance thermoelectric (TE) modules are used to control base temperature. The heat generated from both the laser diodes devices and the TE modules is removed from the fixtures conductively via highperformance aluminum cold plates which circulate facility water. The fixture base temperature is defined as the temperature of the metal portion of the fixture that the laser diode is attached to, directly under the base of the device. The LRS-9550 allows for maximum fixture base temperatures up to 85°C. The minimum achievable fixture base temperature is dependent on both cooling water temperature and total heat load applied to the fixture. When designing a custom LRS-9550 fixture, a trade-off will occur between number of devices on a fixture and minimum fixture temperature. More laser diode devices on a fixture at a given power level equals a larger heat load and thus a higher minimum temperature.

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