3 research outputs found
Preparation and Optical Properties of Nd:Bi<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> Laser Crystal with Disordered Structure and Attractive Multiwavelength Emission Characteristics
Laser crystals with multiwavelength emission characteristics
are
potential light sources for terahertz radiation. Herein, the pure
and Nd-doped Bi2Ti2O7 (BTO) laser
crystals with sizes up to 16 × 13 × 5 mm3 were
successfully grown using the flux method in the KF-B2O3–CaBi4Ti4O15 growth
system. The crystal structure, ideal morphology, chemical, mechanical,
and thermal properties, optical transmission and Raman spectra, refractive
index, absorption, and fluorescence spectra, as well as fluorescence
lifetimes, were systematically studied. Besides, the spectral parameters
of Nd3+ ions in the BTO crystal were systematically calculated
based on the Judd–Ofelt theory. The Nd:BTO crystal has a wide
transmittance range (0.44–7.30 μm), a small coefficient
of thermal expansion (5.80 × 10–6 K–1), and a large absorption full width at half-maximum (fwhm) (31.2
nm) at around ∼804 nm, making it more potential for use in
high-power laser systems. Moreover, fluorescence spectra show four
emission peaks at 1054, 1062, 1104, and 1112 nm. The strong multiwavelength
emission property makes Nd:BTO a promising laser crystal, serving
as a potential light source for terahertz radiation
Preparation and Optical Properties of Nd:Bi<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub> Laser Crystal with Disordered Structure and Attractive Multiwavelength Emission Characteristics
Laser crystals with multiwavelength emission characteristics
are
potential light sources for terahertz radiation. Herein, the pure
and Nd-doped Bi2Ti2O7 (BTO) laser
crystals with sizes up to 16 × 13 × 5 mm3 were
successfully grown using the flux method in the KF-B2O3–CaBi4Ti4O15 growth
system. The crystal structure, ideal morphology, chemical, mechanical,
and thermal properties, optical transmission and Raman spectra, refractive
index, absorption, and fluorescence spectra, as well as fluorescence
lifetimes, were systematically studied. Besides, the spectral parameters
of Nd3+ ions in the BTO crystal were systematically calculated
based on the Judd–Ofelt theory. The Nd:BTO crystal has a wide
transmittance range (0.44–7.30 μm), a small coefficient
of thermal expansion (5.80 × 10–6 K–1), and a large absorption full width at half-maximum (fwhm) (31.2
nm) at around ∼804 nm, making it more potential for use in
high-power laser systems. Moreover, fluorescence spectra show four
emission peaks at 1054, 1062, 1104, and 1112 nm. The strong multiwavelength
emission property makes Nd:BTO a promising laser crystal, serving
as a potential light source for terahertz radiation
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