Tunable quasi-cw two-micron lasing in diode-pumped crystals of mixed Tm{sup 3+}-doped sodium - lanthanum - gadolinium molybdates and tungstates

Journal Article · Thu Dec 09 00:00:00 EST 2010 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2010V040N10ABEH014403· OSTI ID:21541837

Bol'shchikov, F A; Ryabochkina, P A ^[1]; Zharikov, Evgeny V; Lis, Denis A; Subbotin, Kirill A ^[2]; Zakharov, N G; Antipov, Oleg L ^[3]

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1. N.P. Ogarev Mordovian State University, Saransk (Russian Federation)
2. A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
3. Institute of Applied Physics, Russian Academy of Sciences, Nizhnii Novgorod (Russian Federation)

Two-micron lasing is obtained for the first time on the {sup 3}F{sub 4} {yields} {sup 3}H{sub 6} transition of Tm{sup 3+} ions in diode-pumped crystals of mixed sodium - lanthanum - gadolinium tungstate Tm:NaLa{sub 1/2}Gd{sub 1/2}(WO{sub 4}){sub 2} (C{sub Tm} = 3.6 at %) (3.6Tm : NLGW) and molybdate Tm:NaLa{sub 1/3}Gd{sub 2/3}(MoO{sub 4}){sub 2} (C{sub Tm} = 4.8 at %) (4.8Tm : NLGM). For the 3.6Tm : NLGW crystal, the quasi-cw laser output power exceeded 200 mW and the slope efficiency (with respect to absorbed pump power) for the {pi}- and {sigma}-polarisations at wavelengths of 1908 and 1918 nm was 34% and 30%, respectively. The laser wavelength of this crystal was continuously tuned within the spectral range of 1860 - 1935 nm. For the 4.8Tm : NLGM crystal, the slope efficiency for the {pi}- and {sigma}-polarisations at wavelengths of 1910 and 1918 nm was 27% and 23%, respectively, and the laser wavelength was tunable within the spectral range of 1870 - 1950 nm. (lasers)

• OSTI ID: 21541837
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 40, Issue 10; Other Information: DOI: 10.1070/QE2010v040n10ABEH014403; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CRYSTALS
DOPED MATERIALS
GADOLINIUM TUNGSTATES
LANTHANUM TUNGSTATES
LASERS
MOLYBDATES
SODIUM TUNGSTATES
THULIUM IONS
WAVELENGTHS
ALKALI METAL COMPOUNDS
CHARGED PARTICLES
GADOLINIUM COMPOUNDS
IONS
LANTHANUM COMPOUNDS
MATERIALS
MOLYBDENUM COMPOUNDS
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
SODIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TUNGSTATES
TUNGSTEN COMPOUNDS