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Pulser amplitude feedback amplifier (view source)
Revision as of 16:23, 20 June 2014
, 16:23, 20 June 2014no edit summary
Figure 2. Layout of the pulser amplitude feedback amplifier circuit board, showing external connections to the 9V power supply, the laser diode package, and the output signal which generates the amplitude feedback pulses. The layout is designed for a standard prototype PCB with traces running in one direction across the board and holes on a 1/10 inch grid. The 9V battery is mounted on the back side of the board. External wires to the laser diode are labeled as 2 and 3. Capacitors are colored purple, resistors are light brown, and wired connections are gray or green. Filled circles represent wired connections on the back side of the board, with the fill color indicating the matched pairs.
Figure 2. Layout of the pulser amplitude feedback amplifier circuit board, showing external connections to the 9V power supply, the laser diode package, and the output signal which generates the amplitude feedback pulses. The layout is designed for a standard prototype PCB with traces running in one direction across the board and holes on a 1/10 inch grid. The 9V battery is mounted on the back side of the board. External wires to the laser diode are labeled as 2 and 3. Capacitors are colored purple, resistors are light brown, and wired connections are gray or green. Filled circles represent wired connections on the back side of the board, with the fill color indicating the matched pairs.
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[[image:laserDiode_pd_amp(3).png|600px|center]]
Figure 3. Photograph of the component side (left panel) and back side (right panel) of the feedback amplifier circuit board.
===Output pulses===
Below are some traces of output pulses from the pulser amplitude feedback amplifier, taken with the 350MHz oscilloscope and with the 250MHz FADC (analog bandwidth 100MHz).
[[image:laserDiode_pd_amp_pulse(1).png|400px|center]]