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Optical Crystal
optical crystal
Ti:Sapphire
Titanium sapphire (titanium-doped sapphire, Al₂O₃:Ti³⁺) has a relatively wide emission band, ranging from 660 to 1050 nm. This is beneficial for various existing and potential applications. For ex..
Product description
Titanium sapphire (titanium-doped sapphire, Al₂O₃:Ti³⁺) has a relatively wide emission band, ranging from 660 to 1050 nm. This is beneficial for various existing and potential applications. For example, tunable continuous-wave lasers, mode-locked oscillators, chirped pulse amplifiers, thin-disk oscillators/amplifiers, and laser detection and measurement devices. In addition, the absorption band of titanium sapphire is centered at 490 nm and is between 400 and 650 nm, making it suitable for pumping a variety of lasers, such as argon ion lasers, frequency-doubled Nd:YAG (Nd-YLF) lasers, and copper vapor lasers. Due to its fluorescence lifetime of 3.2 μs, titanium sapphire crystals can be effectively used in high-power flashlamp-pumped laser systems.
Main Applications:
The tunable wavelength coverage ranges from 700 to 1000 nm, enabling Ti:Sapphire to replace dye lasers in many applications.
Using ultra-thin non-critical phase-matching crystals such as BBO as sum-frequency devices, Ti:Sapphire can generate ultrashort pulse ultraviolet and deep ultraviolet (around 193 nm) lasers with a pulse width of less than 10 fs.
Ti:Sapphire is also widely used as a pump source for optical parametric amplification to expand its tunable range.
Basic Characteristics
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Molecular Formula
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Ti³⁺:Al₂O₃
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Crystal Structure
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Hexagonal System
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Lattice Constant
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a = 4.758 Å, c = 12.991 Å
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Density
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3.98 g/cm³
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Melting Point
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2040°C
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Mohs Hardness
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9
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Thermal Conductivity
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52 W/m/k
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Specific Heat
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0.42 J/g/K
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Laser Action
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4-level electron vibration
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Fluorescence Lifetime
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3.2 μs (T = 300K)
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Tuning Range
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660 - 1050 nm
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Absorption Range
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400 - 600 nm
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Reflection Peak
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795 nm
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Absorption Peak
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488 nm
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Refractive Index
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1.76 @ 800 nm
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Peak Cross-Section
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3~4×10⁻¹⁹ cm²
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Coefficient of Thermal Expansion
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8.40×10⁻⁶/℃
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