Q-switching in a Cr{sup 3+}:Yb{sup 3+}:Ho{sup 3+}:YSGG crystal laser based on the {sup 5}I{sub 6} - {sup 5}I{sub 7} ({lambda}=2.92{mu}m) transition
- A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
An investigation was made of the generation of giant pulses in a new yttrium scandium gallium garnet laser crystal doped with holmium (Cr{sup 3+}:Yb{sup 3+}:Ho{sup 3+}:YSGG) operating on the basis of the self-terminating {sup 5}I{sub 6} - {sup 5}I{sub 7} transition. Q-switching was performed by an electro-optical lithium niobate switch, a passive switch based on an epitaxial film of indium arsenide on a gallium arsenide substrate, or a passive switch consisting of water. The 2.92 {mu}m wavelength dominated giant pulse generation, whereas under free-running conditions the radiation was discretely tunable in the range 2.84 -3.05 {mu}m. Depending on the Q-switching method, pulses of 60 - 160 ns duration were generated and the pulse energy was {approx}20 mJ. The second and fourth harmonics of the holmium laser radiation were generated and the efficiency of each frequency-multiplication stage was {approx}20%. (lasers)
- OSTI ID:
- 21439471
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 29, Issue 4; Other Information: DOI: 10.1070/QE1999v029n04ABEH001473; ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHROMIUM IONS
CRYSTALS
DOPED MATERIALS
EPITAXY
GALLIUM
GALLIUM ARSENIDES
GARNETS
HARMONIC GENERATION
HOLMIUM IONS
INDIUM ARSENIDES
LASER RADIATION
NIOBATES
PULSES
Q-SWITCHING
SCANDIUM
SEMICONDUCTOR SWITCHES
THIN FILMS
WAVELENGTHS
YTTERBIUM IONS
YTTRIUM
ARSENIC COMPOUNDS
ARSENIDES
CHARGED PARTICLES
CRYSTAL GROWTH METHODS
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELEMENTS
EQUIPMENT
FILMS
FREQUENCY MIXING
GALLIUM COMPOUNDS
INDIUM COMPOUNDS
IONS
MATERIALS
METALS
MINERALS
NIOBIUM COMPOUNDS
OXYGEN COMPOUNDS
PNICTIDES
RADIATIONS
REFRACTORY METAL COMPOUNDS
SEMICONDUCTOR DEVICES
SILICATE MINERALS
SWITCHES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS