Nd-glass burst laser with kW average power output

Nd-glass burst laser with kW average power output

Demonstrations of operation of a compact neodymium glass laser with average output powers greater than 1 kW for several seconds are reported. The laser is based on the thermal inertia laser (TIL) concept wherein a neodymium-doped glass rod is pumped uniformly without cooling during a burst mode of l...

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Veröffentlicht in:IEEE Journal of Quantum Electronics 1995-02, Vol.31 (2), p.293-300
Hauptverfasser: Walters, C.T., Dulaney, J.L., Campbell, B.E., Epstein, H.M.
Format: Artikel
Sprache:eng
Schlagworte:
COMPARATIVE EVALUATIONS
Cooling
DEMONSTRATION PROGRAMS
DESIGN
DOPED MATERIALS
Doped-insulator lasers and other solid state lasers
ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
Exact sciences and technology
EXPERIMENTAL DATA
Fundamental areas of phenomenology (including applications)
Glass
Heat flux
Laser excitation
LASER MATERIALS
Laser modes
Laser pulses
Lasers
Neodymium
NEODYMIUM LASERS
Optical design
Optical glass
Optical pulses
Optical pumping
Optics
Physics
Power generation
Power lasers
Pump lasers
SCALING LAWS
Specific heat of solids
Thermal conductivity
Thermal effects
Thermal gradients
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Beschreibung
Zusammenfassung:Demonstrations of operation of a compact neodymium glass laser with average output powers greater than 1 kW for several seconds are reported. The laser is based on the thermal inertia laser (TIL) concept wherein a neodymium-doped glass rod is pumped uniformly without cooling during a burst mode of laser operation. Design principles for TIL devices and scaling to 100 kW class lasers are discussed. Experimental results for a low repetition-rate proof-of-concept pulsed device (30 J, 0.2 Hz) and a high repetition-rate pulsed prototype (40 J, 36 Hz) are presented and compared to numerical solutions for the laser rate equations with temperature dependent cross-sections.< >
ISSN:0018-9197
1558-1713
DOI:10.1109/3.348058