Performance of various diode-pumped Nd:laser materials: influence of inhomogeneous broadening

Mermilliod, N.; Romero, R.J.; Chartier, Isabelle; Garapon, C.; Moncorgé, R.

doi:10.1109/3.135245

Cited by 102 publications

(36 citation statements)

References 14 publications

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“…There are good reasons to believe that progress in the basic research and developments considered and briefly mentioned above will lead not only to improvements in the understanding of crystalline lasers but will also stimulate research into novel laser technologies. CaWO4 300 ∼ 0.81 [477] SrAl11O19:MgO 300 ∼ 0.81 [478] Y2O3 (ceramic) 300 ∼ 0.807 [290] β-YAl3(BO3)4 300 ∼ 0.808 [421,479,480] www.lpr-journal.org h) The composition of crystal was Cd0.55Mn0.45Te [603]. i) "Fibre"-like laser as well [614].…”

Section: Discussionmentioning

confidence: 99%

Laser crystals and ceramics: recent advances

Kaminskii

2007

Laser & Photonics Reviews

372

236

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After a brief examination of known insulating laser crystals and the stimulated emission channels of their generating activator ions, this article reviews recent advances in the development of novel lasing crystals and ceramics, as well as inorganic and organic nonlinear-laser crystals for χ (3) and cascaded χ (3) ↔ χ (2) frequency converters. Several new modern attractive technologies in the physics and techniques of crystalline lasers are also discussed.Section of the crystal structure of Na3Li (SeO4)

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Section: Discussionmentioning

confidence: 99%

Laser crystals and ceramics: recent advances

Kaminskii

2007

Laser & Photonics Reviews

372

236

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“…The output coupling values were determined as the negative of the logarithm of the mirror reflectivity. From figure 3 it can be found that for 1 at.%-doped crystal slope efficiency varies with output coupling similar to that expected for a homogeneously broadened crystal [14]. For homogeneously broadened crystal the slope efficiency is given by…”

Section: Cw Performancesmentioning

confidence: 59%

Effect of Nd3+ concentration on CW and pulsed performance of fiber-coupled diode laser pumped Nd:YVO4 laser at 1064 nm

et al. 2002

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The effect of Nd 3· concentration on the CW and Q-switched laser performances at 1064 nm from Nd : YVO 4 has been studied under diode laser pumping in identical laser configuration. The Nd 3· concentrations used were 1, 2 and 3 at. % in YVO 4 crystals. Under the CW operations we have compared the thermal lensing effect, slope efficiencies and also the beam quality at the fourth-order degeneracy configuration. Q-switching was done with the help of an acousto-optic modulator and we have compared the pulses obtained from Nd : YVO 4 laser with different doping concentration. It was found that the 1 at.%-doped crystal is the best, offering highest optical-to-optical conversion efficiency (55%), lowest fractional heat load (24%), highest pulse energy (80 µJ) and shortest pulse width (20 ns). It was also found that there was not much difference in performances for 2 and 3 at. %-doped crystals both in CW and Q-switched configurations.

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“…Typically, only optical centers in the "non-perturbed" position will contribute to laser gain (i.e., Neodymium ions redistributed in the YAG network due to laser irradiation) do not contribute to laser oscillation. 30 In our case, the laser spectrum is a narrow one (see inset in Figure 4). Indeed, it is almost as narrow as that obtained from the homogeneous line broadened Type II waveguides, as only the "original" or "non-perturbed" centers are contributing to the laser beam.…”

Section: Resultsmentioning

confidence: 99%

“…Laser materials with inhomogeneous line broadened emission lines are known to show reduced laser slope efficiencies, especially when output couplers with large transmittances are used. 30 The possible adverse effects that lattice re-distribution could have on the laser performance of MS-DLW WGs have been investigated by performing mirror-less laser action experiments. Optical excitation was performed by using a 808 tuned Ti:Sapphire laser beam that was coupled into the MS-DLW WG by using a 0.35 NA microscope objective.…”

Section: Resultsmentioning

confidence: 99%

Fluorescence imaging of lattice re-distribution on step-index direct laser written Nd:YAG waveguide lasers

Mendívil

Ródenas

Benayas

et al. 2015

Journal of Applied Physics

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The laser performance and crystalline micro-structural properties of near-infrared step-index channel waveguides fabricated inside Neodymium doped YAG laser ceramics by means of three-dimensional sub-picosecond pulse laser direct writing are reported. Fluorescence micro-mapping of the waveguide cross-sections reveals that an essential crystal lattice re-distribution has been induced after short pulse irradiation. Such lattice re-distribution is evidenced at the waveguide core corresponding to the laser written refractive index increased volume. The waveguides core surroundings also present diverse changes including slight lattice disorder and bi-axial strain fields. The step-index waveguide laser performance is compared with previous laser fabricated waveguides with a stress-optic guiding mechanism in absence of laser induced lattice re-distribution. V C 2015 AIP Publishing LLC. [http://dx

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Performance of various diode-pumped Nd:laser materials: influence of inhomogeneous broadening

Cited by 102 publications

References 14 publications

Laser crystals and ceramics: recent advances

Laser crystals and ceramics: recent advances

Effect of Nd3+ concentration on CW and pulsed performance of fiber-coupled diode laser pumped Nd:YVO4 laser at 1064 nm

Fluorescence imaging of lattice re-distribution on step-index direct laser written Nd:YAG waveguide lasers

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