Is it possible to modulate KLASTECH lasers?
DPSS lasers unlike diode lasers are very susceptible to variations in the pump diode power. This is due to a number of reasons but two are particularly critical: 1/ The laser gain medium and the second harmonic conversion crystal are both optically non-linear in response to their respective excitation wavelengths, therefore alterations in the original pump diode output power can have unexpected effects including unstable performance and increased optical noise; 2/ A DPSS laser´s thermo-mechanical stability is controlled very carefully to ensure stable optical performance, varying the pump diode power can affect this thermal equilibrium to the detriment of the laser performance and lifetime. KLASTECH does not take this approach. Instead we offer two routes to modulation, one is better defined as customer output power adjustment, where we make use of the second cavity to allow the implementation of a simple optical attenuator after the generation of the second harmonic, thus leaving all
