High-peak power, passively Q-switched, composite, all-polycrystalline ceramic Nd:YAG/Cr{sup 4+}:YAG lasers
High-peak power, passively Q-switched, composite Nd : YAG/Cr{sup 4+} : YAG lasers consisting of all-polycrystalline bonded Nd:YAG and Cr{sup 4+}:YAG ceramics are developed, and two applications of such lasers are discussed. A 1.1-at. %-doped Nd:YAG/Cr{sup 4+}:YAG ceramic laser is fabricated, which is quasi-cw pumped by a diode laser in the Hz-range, delivering laser pulses of 2.5-mJ energy and 1.9-MW peak power. By frequency doubling the laser output in a LiB{sub 3}O{sub 5} (LBO) nonlinear crystal at room temperature, 0.36-mJ, 0.3-MW green laser pulses with 27 % conversion efficiency are produced at 532 nm. Furthermore, a highly doped (1.5-at. %) Nd:YAG/Cr{sup 4+}:YAG ceramic laser operates successfully in the range of pulse repetition rates from 50 to 500 Hz, yielding 0.8-to-1.0 mJ pulses with a peak power around 1 MW. The laser output beam is amplified in a master-oscillator - power-amplifier (MOPA) system to generate laser pulses with 11-mJ energy at a 250-Hz repetition rate. (lasers)
- OSTI ID:
- 22043993
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 3 Vol. 42; ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
BEAMS
BORATES
CERAMICS
CHROMIUM ADDITIONS
CONVERSION
DOPED MATERIALS
EFFICIENCY
GARNETS
LASER MATERIALS
LITHIUM COMPOUNDS
NEODYMIUM LASERS
OSCILLATORS
POLYCRYSTALS
POWER AMPLIFIERS
PULSES
Q-SWITCHING
TEMPERATURE RANGE 0273-0400 K
YTTRIUM COMPOUNDS