Re: pulsed lasers-continuous lasers

Camilo <camilogil@xxxxxxxxxxxxxx> wrote:


If what you meant was what determines whether the laser is pulsed or
continuous, it is how you design whatever pumps it.

--

hmm, so you mean that a laser that use and alternating source (an AC
HV source for instance) to generate light the output amplified light
has the same duration that AC period (1/frequency). And consequently
if I use a continuous pumping souce, the laser will emit continously
amplified light?! (a CC HV source, from a Van de graaff generator for
instance )

Not quite.

First you have to define what kind of laser it is and what it is that
pumps the laser.

Laser diodes for example are pumped with low voltage DC (around a few
volts). Pump it with DC pulses and you have a pulsed laser.

The original ruby lasers were usually pumped with a flash tube. Since
flash tubes are by definition pulsed, a ruby laser with such a pump
is pulsed.

Helium-neon lasers are pumped with high voltage DC (around 1000V) and
can be either continuous or pulsed.

Van de Graff generators are a poor choice for pumping just about any
kind of laser.


--
Jim Pennino

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