Introducing gigahertzbandwidth photodetectors for the visible and nearIR
Introducing gigahertz-bandwidth photodetectors for the visible and near-IR spectral range that provide highest performance-to-price ratio available today! We offer 2 -GHz Si detectors for the visible and 6 -GHz In. Ga. As detectors for the near-IR spectral range.
TECHNICAL DATA Parameter Visible HSP-V 2 detector Near-IR HSP-IR 6 detector Si In. Ga. As 320 -1100 nm 900 -1650 nm Detector diameter 0. 4 mm 0. 08 mm Bandwidth (-3 d. B level) >2 GHz ~6 GHz Rise and fall time <150 ps <70 ps <20 % of maximum <20% of maximum <0. 005 n. A @ 20 V <1. 5 n. A @ 20 V ~1 p. F @ 20 V ~0. 3 p. F @ 20 V 2× 10 -15 W/√Hz Output impedance 50 Ohm Peak input power 200 m. W 100 m. W Maximum output signal amplitude 2 V 2 V Input fiber receptacle FC FC Battery power supply 20 V 25. 4× 38. 1 mm Detector material Spectral range Afterpulse ringing amplitude Dark current Junction capacitance NEP Dimensions
Visible V-2 photodetector spectral and impulse response 0. 6 Responsivity (A/W) 0. 5 0. 4 0. 3 0. 2 0. 1 0 300 400 500 600 700 800 Wavelength (nm) 900 1000 1100
Near-IR IR-6 photodetector spectral and impulse response 10 Responsivity (A/W) 1 0. 01 0. 001 800 1000 1200 1400 Wavelength (nm) 1600 1800
Typical measurement setup Light pulse is coupled into a delivery fiber Delivery fiber High-bandwidth adapter Photodetector Oscilloscope
OPERATIONAL INSTRUCTIONS • Couple the light to be analyzed into a 50 - m delivery fiber. Keep the energy and power of the coupled radiation below the damage threshold of the fiber tip/volume. • Attenuate the peak power of the optical pulse exiting the fiber to less than 100 m. W. NOTE: if the photodetector input peak power is greater than 200 m. W, the detector may be damaged and the warranty will not apply. • Connect the photodetector to an oscilloscope using a high-bandwidth SMA adapter. Using cables or low-bandwidth adapters will significantly degrade the quality of measurement. • Slowly insert the FC fiber connector into the photodetector fiber receptacle while watching the electrical signal on the oscilloscope. The maximum value of the signal must be lower than 2 V into 50 Ohm. Attenuate the input signal until the fiber connector can be completely inserted into receptacle without exceeding 2 V of output signal. • Upon completion of measurements disconnect the fiber from the photodetector or block the fiber input from the radiation to prevent unnecessary battery drain. • Always use protective plastic caps for the detector receptacles and fiber connectors.
20 V battery pack 1 Battery pack Electronic compartment Changing the battery pack: 1. Unscrew four #2 -56 screws (one at each corner) that hold the battery pack and the electronic compartment together. SAVE THESE SCREWS. 2. Remove the old battery pack and discard it. 3. Attach a new battery pack with four #2 -56 screws. The battery pack has 90º rotational symmetry. Align it to the electronics compartment in any orientation. #2 -56 screws 2 Electrical contacts – DO NOT TOUCH! Four #2 -56 screws – SAVE THESE! 3
- Slides: 7