High-peak power, passively Q-switched, composite, all-polycrystalline ceramic Nd:YAG/Cr{sup 4+}:YAG lasers

Journal Article · Sat Mar 31 00:00:00 EDT 2012 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2012V042N03ABEH014745· OSTI ID:22043993

Sandu, O; Salamu, G; Pavel, N; Dascalu, T; Chuchumishev, D; Gaydardzhiev, A; Buchvarov, I

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.), Vol. 42, Issue 3; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
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