 1 ns red laser diode pulses by 6 ns electrical pulses
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hboy007
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Registered Member #1667
Joined: Sat Aug 30 2008, 09:57PM
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Posts: 374
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I see nothing wrong with that lasing spike, depending on the structure of the LD, this might even be desired. Extending the electric pulse should lead to more spiking, followed by CW operation.
As for the timing - At 5ns/m propagation delay every cable segment matters. Have you re-checked all cable lengths involved?
Impedance also matters. I more than once hat to resort to terminating the signal cable near the LD and adding in a buffer driver with only millimeters to the LD. Just to avoid any reflections summing at the LD...
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Physikfan
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Registered Member #60240
Joined: Mon May 16 2016, 07:01PM
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Posts: 304
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Hi hboy007
Very interesting figure!
"adding in a buffer driver with only millimeters to the LD."
Please, could you give me the source or the circuit for this buffer driver.
Fast enough for almost subnanosecond pulses?
Regards
Physikfan
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