Laser action from Ho&amp;lt;sup&amp;gt;3+&amp;lt;/sup&amp;gt;, Er&amp;lt;sup&amp;gt;3+&amp;lt;/sup&amp;gt;, and Tm&amp;lt;sup&amp;gt;3+&amp;lt;/sup&amp;gt;in YAlO&amp;lt;inf&amp;gt;3&amp;lt;/inf&amp;gt;

Weber, Marvin J.; Bass, Michael; Varitimos, T. E.; Bua, D.

doi:10.1109/jqe.1973.1077426

Cited by 69 publications

(11 citation statements)

References 16 publications

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“…The room temperature optical spectra and optical transition probabilities for Ho 3+ in YAP have been reported by Weber et al [24], also Weber et al [25] demonstrated laser action in the IR region from the Ho 3+ :YAP. As a result of extensive studies of 3 mm laser materials, IR level lifetimes and emission cross-sections for Ho 3+ :YAP have been established in Ref.…”

Section: Introductionmentioning

confidence: 54%

Emission from the high lying excited states of Ho3+ ions in YAP and YAG crystals

Malinowski¹,

Kaczkan²,

Wnuk

et al. 2004

Journal of Luminescence

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Section: Introductionmentioning

confidence: 54%

Emission from the high lying excited states of Ho3+ ions in YAP and YAG crystals

Malinowski¹,

Kaczkan²,

Wnuk

et al. 2004

Journal of Luminescence

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“…Furthermore, the search for better Tm-host crystals is still in progress and recent studies show promising results with YAP single crystals [8,9]. Laser emission from Tm:YAP crystal was first demonstrated with flash-lamp pumping [10] and then using Ti:sapphire laser pumping [11]. Currently, it has been demonstrated that diode pumping is the most efficient way for Tm:YAP laser pumping [12,13].…”

Section: Introductionmentioning

confidence: 99%

Room-temperature cw and pulsed operation of a diode-end-pumped Tm:YAP laser

Cai

Kong

et al. 2007

Appl. Phys. B

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We report the continuous-wave and acousto-optical Q-switched operation of a diode-end-pumped Tm:YAP laser. Continuous-wave output power of 3.5 W at 1.99 µm was obtained under the absorbed pump power of 14 W. Under Qswitched laser operation, the average output power increased from 1.57 W to 2.0 W, with an absorbed pump power of 12.6 W, as the repetition rate increased from 1 kHz to 10 kHz. The maximum Q-switched pulse energy was 1.57 mJ with a repetition rate of 1 kHz. The minimum pulse width was measured to be about 80 ns, corresponding to a peak power of 19.6 kW.PACS 42.55.Rz; 42.55.Xi; 42.60.Gd IntroductionSolid-state lasers working at the 2-µm waveband are of great interest because of several favorable characteristics. Owing to the strong absorption by liquid water, the 2-µm laser is an ideal light source for bio-medical applications. The 2-µm laser can also be used for range finding, coherent laser lidar and atmospheric sensing since it is in the eye-safe spectral range. In addition, high-power 2-µm lasers are preferable as pump sources for optical parametric oscillators (OPOs) and optical parametric amplifiers (OPAs) in the mid-infrared region than 1-µm lasers since they provide higher quantum efficiency. Based on these considerations, solid-state lasers operating around the 2-µm waveband have been intensively investigated recently [1][2][3]. In order to obtain the 2-µm-waveband laser oscillation, the rare-earth-ion thulium (Tm 3+ ) and holmium (Ho 3+ ) doping materials, which work as quasi-three-level laser systems, are commonly used. However, due to the existence of reabsorption loss, the laser performance is sensitive to the change of temperature. For this, liquid-nitrogen cooling is often used to achieve a highefficiency laser output but this incurs great inconvenience in practical applications. In addition to the temperature of the laser system, the physical and chemical properties of the laser host can greatly affect the laser performance. Therefore, studu Fax: +86-571-87952437, E-mail: physyh@zju.edu.com ies of laser hosts for 2-µm lasers have also been intensively carried out. Laser operations based on several hosts such as YAG, YLF and vanadates (YVO 4 and GdVO 4 ) etc. were reported [4][5][6][7]. Furthermore, the search for better Tm-host crystals is still in progress and recent studies show promising results with YAP single crystals [8,9]. Laser emission from Tm:YAP crystal was first demonstrated with flash-lamp pumping [10] and then using Ti:sapphire laser pumping [11]. Currently, it has been demonstrated that diode pumping is the most efficient way for Tm:YAP laser pumping [12,13]. The Tm:YAP single crystal is attractive as active material for 2-µm lasers mainly due to its natural birefringence combined with good thermal and mechanical properties similar to those of the YAG crystal [8]. In addition, the emission cross section of thulium in the YAP crystal (5.5 × 10 −21 cm 2 ) is twice as high as that in the YAG crystal (2.2 × 10 −21 cm 2 ) [9]. Furthermore, it has been demonstrated tha...

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“…[18][19][20] Results from those studies suggest that the erbium perovskite system may possess interesting magneto-optical properties as well. Some of the energy ͑Stark͒ levels of Er 3+ 4f 11 in YAP have been reported earlier by Donlan and Santiago, 21 followed by a crystal-field splitting calculation of the Stark levels by O'Hare and Donlan. 22 Using synchrotron radiation to excite Nd 3+ and Er 3+ ions in YAP, Duan et al 23 recently reported the excitation spectrum of the 473 nm emission from the erbium crystal between 75 and 300 nm.…”

Section: Introductionmentioning

confidence: 70%

Modeling optical spectra and Van Vleck paramagnetism in Er3+:YAlO3

Gruber

Chandra

Sardar

et al. 2009

Journal of Applied Physics

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Magnetic and optical properties of rare earth doped Sn 0.95 RE 0.05 O 2 − δ ( RE = Gd , Dy, Er) J. Appl. Phys. 97, 10A925 (2005); 10.1063/1.1855707Manifestation of quasi-symmetry of the cation sites of Gd 2 SiO 5 , Y 2 SiO 5 , and Lu 2 SiO 5 in the spectra of the impurity ion Pr 3+ Low Temp.Low-temperature absorption spectra are reported for Er 3+ : YAlO 3 ͑YAP͒ between 1700 and 350 nm. The low-temperature vacuum ultraviolet absorption spectra are also reported between 400 and 190 nm. A total of 134 experimental energy ͑Stark͒ levels representing 30 multiplets with energies below 44 000 cm −1 were modeled using a parametrized Hamiltonian defined to operate within the 4f 11 electronic configuration of the Er 3+ ions substituting for Y 3+ in YAP, an orthorhombically distorted perovskite. The Y 3+ sites have low symmetry ͑C S ͒. The crystal-field energy-level parameters were determined through use of a Monte Carlo method in which 14 independent parameters are given random starting values, which are optimized using standard least-squares fitting between calculated and experimental levels. The best solution obtained has a standard deviation of 6.92 cm −1 ͑rms error of 6.09 cm −1 ͒. In the presence of a magnetic field the Er 3+ ions occupy two magnetically inequivalent sites. As an independent check of the crystal-field modeling results, crystal-field wave functions for the 4 I 15/2 ground-state manifold of Er 3+ ͑4f 11 ͒ were used to calculate the orientation-dependent anisotropic magnetic susceptibility as a function of temperature over the Curie-Weiss region. The calculated susceptibilities along the a-, b-, and c-axes of the crystal are in excellent agreement with experimental values reported as part of the present study. Van Vleck paramagnetism must be included in the calculations in order to achieve agreement. The calculated angle ͑39.6°͒ associated with the magnetic moment of the Er 3+ sublattice along the a-and b-axes is in good agreement with the corresponding angle reported for Er 3+ in the orthoferrite structures.

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Laser action from Ho<sup>3+</sup>, Er<sup>3+</sup>, and Tm<sup>3+</sup>in YAlO<inf>3</inf>

Cited by 69 publications

References 16 publications

Emission from the high lying excited states of Ho3+ ions in YAP and YAG crystals

Emission from the high lying excited states of Ho3+ ions in YAP and YAG crystals

Room-temperature cw and pulsed operation of a diode-end-pumped Tm:YAP laser

Modeling optical spectra and Van Vleck paramagnetism in Er3+:YAlO3

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