22 Questions
Er:YAG laser emits light with a wavelength of 2.94 µm
True
Titanium sapphire laser produces light mainly in the ultraviolet spectrum
False
Chromium (III) ions are commonly used in lasers that emit light at 2.1 µm wavelengths
False
Nd:YAG laser emits light in the visible spectrum range
False
Ytterbium-doped YAG crystals are known to produce light at 1030 nm
True
Cr4+ ions are commonly used in forsterite lasers emitting light at 1.1–1.37 µm wavelengths
False
Solid state lasers always use semi-conductors as the active media.
False
Nd:YAG is the abbreviation for neodymium-doped yttrium aluminum garnet.
True
Thin-disk lasers based on Yb:YAG can reach efficiencies above 60%.
False
Glass systems generally outperform crystalline hosts in high energy output applications
True
Ruby lasers are commonly used in deep penetration welding applications.
False
Argon ion lasers generally have wall-plug efficiencies around or below 0.1%.
True
Compared to YAG, glass has lower thermal conductivity
False
The laser wavelength must not be absorbed well by the workpiece for successful laser welding.
False
The doping ability of glass to high concentration allows for greater energy storage per unit volume
True
Neodymium has been incorporated into alkali-alkaline earth based glasses such as rubidium barium silicate glass
True
For solid-state lasers, pumping is accomplished by electrical excitation.
False
Rare earth elements with atomic numbers from 58 to 71 are commonly employed as ions in solid state lasers.
True
High thermal conductivity allows glass systems to extract the largest amount of energy in large laser systems
False
There are three typical regimes of operation mentioned: normal pulse mode, Q-switched operation, and femtosecond pulse operation.
False
Host materials for solid state lasers are typically in the form of a spherical rod.
False
A narrow fluorescent line width is unfavorable for laser operation.
False
Test your knowledge on host materials commonly used in lasers, including hard gemlike crystalline materials and glasses, along with important emission wavelengths for ions such as neodymium, titanium, and ytterbium.
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