Growth and laser properties of Ti:sapphire singlecrystal fibres

Laser crystals and ceramics: recent advances

“…Several crystalline fibre-like lasers are also known with active element diameters of 0.1-1 mm, e.g. α-Al2O3:Ti 3+ (∅ = 350 µm and l = 11.2 mm) [683], Y3Al5O12:Tm 3+ (∅ = 1 mm and l = 3 mm) [624], and LiNdP4O12:Nd 3+ (∅ = 130 µm and l = 1.33 mm) [625], YVO4:Nd 3+ (∅ = 400 µm and l = 1 mm) [795], and Y3Al5O12:Nd 3+ (ceramic, (∅ = 0.9 mm and l = 65 mm)) [796] a) P, CW, q-CW, Q-sw, and ps: pulse, continuous-wave, quasi-continuous-wave, Q-switched mode, and picosecond pulse lasing generation modes, respectively. b) CC, colour-centre laser; DL, dye laser; Xe and W, xenon and tungsten-iodine lamp pumping sources, respectively (as in Table 10).…”

New passively Q-switched LD-pumped self-Raman laser with single-step cascade SE → SRS wavelength conversion on the base of monoclinic Nd3+:Y2SiO5crystal

“…We achieved also quasi-CW generation of Y2SiO5:Nd 3+ at 1.3585 μm. Many-wavelength Raman-induced χ (3) -lasing in undoped Y 2 SiO 5 under picosecond excitation has been observed, as well. All recorded Stokes and anti-Stokes components were identified and attributed to SRS-promoting vibration modes.…”

“…[54]) based on the well known ratio [55] for the orthosilicate is not less than 2.3 cm/GW what indicates that this crystal posses relatively high cubic nonlinear susceptibility. There is reason to believe also that other related monoclinic rare-earth orthosilicates will offer similar χ (3) Table 3) given rise to 3NZ = 192 degrees of vibration freedom that described by C 2h -irreducible representations (in Brillouin-zone center at k = 0) [57] as Γ 192 = 48A g + 48B g + 48A u + 48B u , where the A g and B g modes are Raman active, while A u and B u modes are IR active. Our analysis of the spontaneous Raman scattering spectra (one of them shown in Fig.…”

“…Crystalline self-Raman lasers (SRL) are an attractive alternative to conventional inter-cavity Raman lasers with a separate SE-active (SE: stimulated emission) active Ln 3+ -ion doped crystal and SRS-active (SRS: stimulate Raman scattering) frequency χ (3) -converter. Self-Raman lasers with laser-exhibit much lower reflection and scattering losses, as well as having a simpler and more robust cavity 1.1695 [22,23] a) Were used articles only in refereed journals.…”

“…Abstract: Monoclinic Y 2 SiO 5 was found to be an attractive, simultaneously laser and χ (3) -nonlinear active optical crystal. Passively Q-switched LD-pumped nanosecond Nd 3+ :Y 2 SiO 5 self-Raman laser, operating by nonlinear-cascaded scheme is reported.…”