525B In Stock

The 525B by Newport is a Laser Diode Driver that is designed for stability in demanding applications, such as fiber optic communications and spectroscopy. This precision instrument is equipped with an array of features that ensure optimal performance. The device is characterized by its user-friendly design, incorporating intuitive front panel controls that facilitate ease of use. It offers the flexibility of operating in either constant power or constant current modes, with the added advantage of dual current-level selection. This empowers users to fine-tune laser diode output by optimizing current resolution settings. The 525B features laser diode protection functions, including redundant FET and relay shorting circuits effectively safeguard the laser diode from potential damage during the initial stages of the slow turn-on sequence. After a brief delay, the output current gradually ramps up to the predetermined operating level, ensuring the integrity of the diode.

The 525B boasts compatibility with external analog modulation, a pivotal feature allowing users to modulate or voltage-control the output. In high bandwidth mode, modulation can extend up to 800 kHz, while low bandwidth mode offers controlled, noise-free modulation to support precision laser output power control and wavelength tuning through external control circuitry. The 525B is outfitted with a standard USB 2.0 interface, enabling seamless remote control. The package encompasses an extensive array of operational features, including low-noise current sources that exhibit remarkable long-term stability, exceeding 50 ppm. The user interface software and drivers, tailored for Windows XP and Windows 7 platforms, accommodate both 32-bit and 64-bit systems. The driver integrates a monitor photodiode capable of reverse biasing within a 0V to 5V range, without requiring an external power supply. Additionally, it features an independently adjustable current limit, enhancing its adaptability to diverse operational contexts.