LDC-3724B In Stock

The LDC-3724B by Newport is a Laser Diode Controller that combines the functionalities of a current source and a temperature controller. Its current source capability delivers a remarkably stable output featuring a fully redundant current limit and a range of laser safeguard mechanisms. The integrated 32 W temperature controller interfaces with a wide array of TE modules and thermistors, furnishing meticulous temperature regulation across an extensive temperature spectrum. The LDC-3724B has a GPIB option, which facilitates experiment automation. Designed to cater to precision-driven requirements, this controller is renowned for its dependability, precision, and user-friendly operation. This controller manages low to medium power laser diodes through its dual range current source capabilities of 200/500 mA.

The control panel of the LDC-3724B is ergonomically organized, with TEC (Thermo-Electric Cooler) functions positioned towards the near center of the left side and LASER functions similarly situated on the right side. The front panel houses functions common to both TEC and LASER operations, such as GPIB and ADJUST, located on the outer edges. Leveraging the GPIB/IEEE-488 interface, this controller lends itself to remote operation, applicable in research and development as well as production contexts. A trigger output enhances its suitability for integration into automated measurement systems, where the TTL level output signifies a current step change, triggering measurements. The LDC-3724B integrates a range of protective measures for laser diodes, courtesy of ILX Lightwave. These safeguards encompass adjustable current limits, compliance voltage, output shorting relays, intermittent contract protection, and gradual start-up procedures.

The LDC-3724B operates as an effective gain medium, capable of optically amplifying minor drive current fluctuations arising from noise and drift. Its design ensures a consistently stable optical output for the laser diode, bolstered by a high-precision 16-bit current source that boasts an accuracy level of 0.05%. Meticulous engineering has resulted in measurement reliability, with stability reaching 20 ppm and noise limited to 1.5 µA. Temperature regulation capabilities are extended, spanning from -100°C to 199.9°C. This temperature control can be effectuated in constant TE current, constant sensor, or constant temperature modes, allowing adaptability to distinct operational needs. In scenarios necessitating added safeguarding, the laser diode current source halts output and an illuminating LED indicator signifies the event of a temperature sensor or TE module circuit interruption during operation.