1617-AC In Stock

The 1617-AC by Newport is a Balanced Fiber-Optic Photoreceiver specialized for ellipsometry, absorption spectroscopy, and FM spectroscopy applications. The 1617-AC boasts a dual-photodiode configuration with precise matching, accompanied by an RF amplifier that generates an output voltage proportional to the disparity between the photocurrents registered by the two photodiodes (I1 - I2). Incorporated into the design are three low-frequency monitor outputs, each endowed with SMV connectors and a transimpedance gain of 10 V/mA. These outputs serve a dual purpose: facilitating the alignment of light onto the photodiodes and enabling low-frequency diagnostics. With selectable DC output frequencies of either 15 kHz or 100 kHz, these monitor outputs significantly enhance versatility.

The 1617-AC utilizes integrated transmission lines that establish connections between the photodiodes, amplifier, and output. These lines play a pivotal role in mitigating parasitic inductance and capacitance, effectively minimizing undesirable ringing effects while upholding optimal operational speed. A micro connector discreetly positioned on the unit's side ensures seamless delivery of DC power to the balanced photoreceiver, streamlining the power supply mechanism. To ensure optimal signal fidelity, the 1617-AC has been meticulously shielded to eliminate the potential for noise interference, a crucial consideration in precision applications. This photoreceiver boasts an impressive peak responsivity of 1.0 A/W, enabling accommodation of input optical power up to 2 mW. This peak responsivity is applicable within a specified wavelength range; outside this range, the maximum allowable input optical power adjusts in inverse proportion to the responsivity. A notable feature of the photoreceiver is its inherent capacity to obviate the necessity for a separate lock-in amplifier. This inherent functionality empowers users to effectively counteract laser-intensity fluctuations, resulting in a superior experiential environment characterized by balanced optical signals or a reference signal.