Energy storage and heat deposition in flashlamp-pumped sensitized erbium glass lasers

Journal Article · Mon Oct 01 04:00:00 EDT 1990 · IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/3.60902· OSTI ID:5726828

Lukac, M; Marincek, M ^[1]

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1. ISKRA-Electrooptics, Ljubljana 61210 (YU)

Measurements of population inversion energy storage and heat deposition in flashlamp-pumped Nd:Yb:Er:glass and Cr:Nd:Yb:Er:glass lasers are reported. A thermal camera is used to measure temperature changes following isolated flashlamp pulses. A rate equations model is developed in order to determine energy storage from the output versus input energy characteristics of erbium lasers operating in a free-oscillation mode. Contributions of different sensitizers are distinguished by spectrally filtering flashlamp-pump radiation. It is determined that in Nd:Yb:Er:glass, ytterbium-sensitized pumping contributes 85% to the total erbium inverted population energy storage. Long flashlamp pulse durations are therefore required for efficient Nd:Yb:Er:glass laser operation Direct erbium, and neodymium-sensitized pumping is determined to be relatively inefficient, although the corresponding visible part of the pump spectrum contributes in Nd:Yb:Er:glass as much as 65% of the total deposited heat.

• OSTI ID: 5726828
• Journal Information: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (USA) Vol. 26:10; ISSN 0018-9197; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
ABSORPTION
ALLOYS
CHROMIUM ADDITIONS
CHROMIUM ALLOYS
CONVERSION
EFFICIENCY
ENERGY ABSORPTION
ENERGY CONVERSION
ERBIUM ADDITIONS
ERBIUM ALLOYS
GLASS
LASERS
LIGHT BULBS
NEODYMIUM ADDITIONS
NEODYMIUM ALLOYS
OPTICAL PUMPING
POPULATION INVERSION
PULSES
PUMPING
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
SOLID STATE LASERS
TEMPERATURE DISTRIBUTION
VARIATIONS
YTTERBIUM ADDITIONS
YTTERBIUM ALLOYS