Power degradation due to thermal effects in Potassium Diode Pumped Alkali Laser

Power degradation due to thermal effects in Potassium Diode Pumped Alkali Laser

This paper presents results of our study of the performance of a Potassium DPAL operating in pulsed mode with pump pulses from 0.05 to 5ms long at different pump powers and alkali cell temperatures. The experiments showed the DPAL output power degradation in time with a characteristic time in the ra...

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Veröffentlicht in:Optics communications 2015-04, Vol.341, p.97-100
Hauptverfasser: Zhdanov, B.V., Rotondaro, M.D., Shaffer, M.K., Knize, R.J.
Format: Artikel
Sprache:eng
Schlagworte:
Alkali lasers
Collisions
Degradation
Diodes
DPAL
Fluorescence
Heating
Ionization
Lasers
Potassium
Potassium laser
Pumps
Thermal effects
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Zusammenfassung:This paper presents results of our study of the performance of a Potassium DPAL operating in pulsed mode with pump pulses from 0.05 to 5ms long at different pump powers and alkali cell temperatures. The experiments showed the DPAL output power degradation in time with a characteristic time in the range from 0.5ms to 4.5ms. We attribute the power degradation to heating of the vapor. The recorded spectrum of the side fluorescence indicates that multi-photon excitation, energy pooling collisions and ionization are also present.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2014.12.021