Laser and spectral properties of Cr, Tm, Ho:YAG at 2.1 mu m

Laser and spectral properties of Cr, Tm, Ho:YAG at 2.1 mu m

The authors study the loss process in a uniformly pumped amplifier experiment. The impact of the loss mechanism on laser performance is discussed and its dependence on excited state density is considered. An extensive set of measurements was performed on flashlamp pumped YAG crystals doped with chro...

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Veröffentlicht in:IEEE journal of quantum electronics 1991-09, Vol.27 (9), p.2142-2149
Hauptverfasser: Bowman, S.R., Winings, M.J., Auyeung, R.C.Y., Tucker, J.E., Searles, S.K., Feldman, B.J.
Format: Artikel
Sprache:eng
Schlagworte:
Chromium
Crystals
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Laser excitation
Laser transitions
Lasers
Optics
Performance evaluation
Performance loss
Physics
Pump lasers
Resonant frequency
Signal analysis
Thermal lensing
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Zusammenfassung:The authors study the loss process in a uniformly pumped amplifier experiment. The impact of the loss mechanism on laser performance is discussed and its dependence on excited state density is considered. An extensive set of measurements was performed on flashlamp pumped YAG crystals doped with chromium, thulium, and holmium. Near-room-temperature laser operation on the 2.1 mu m holmium transitions was characterized using a frequency selective resonator. Small signal gain and stored energy lifetimes were analyzed to determine the strength and dependence of loss mechanisms. The analysis of the thermal lensing experiments demonstrated a high degree of excess heat generation in this material.< >
ISSN:0018-9197
1558-1713
DOI:10.1109/3.135173