Continuous‐wave, fourfold upconversion laser
نویسندگان
چکیده
منابع مشابه
Continuous-wave, fourfold upconversion laser
Recent demonstrations 1-5 of room-temperature upconversion lasers have stirred interest in their potential as practical sources of short wavelength radiation for display and data storage applications, as well as for communications and ultrashort pulse generation at visible and ultraviolet wavelengths.6 To date however, little consideration has been given to the relative merits of various fundam...
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Pump processes that produce upconversion laser emission in trivalent rare earth ion-doped gain media are described, and the performance of upconversion lasers pumped by these processes is reviewed. Sequential two-photon absorption upconversion, cooperative energy transfer upconversion and photon avalanche upconversion are discussed in relation to the production of visible laser emission. Using ...
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The first laser to operate with an output wavelength shorter than that of the excitation was a pulsed erbium laser reported by Johnson and Guggenheim.l Since this early work, a variety of continuous-wave lasers have been reported in which upconversion occurs by different mechanisms, and inversions of upconverted energy levels have been sustained by avalanche processes, 2.3 direct pairpumping,4 ...
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In recent years a variety of schemes have been explored for compact, short-wavelength laser sources in solids. These include wide gap semiconductor diode lasers,* nonlinear generation of optical harmonics by phase matching,2 quasiphase matching,3 and upconversion lasers in bulk media4 and fibers.5 In practical terms, while all these approaches have shown promise, all currently exhibit important...
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Several fluoride and oxide Tm and (Tm, Yb) doped crystals such as YLF, GLF, YAG, and YAlO3 were tested for pulsed lasing at the ID2 -+ 3 ~ 4 transition (453 nm blue) at room temperature under two step pumping by a Ti:sapphire and a dye laser. Laser operation was obtained for the fluoride crystals. The input-output curves exhibit a saturation effect of emission with respect to both pump lasers. ...
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 1993
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.110224