Spectroscopic analysis of Nd3+ doped (Lu x  + Gd1−x )3Ga5O12 crystal

Jia, Zhitai; Tao, Xutang; Dong, Chunming; Jiang, Minhua; Arcangeli, A.; Bigotta, S.; Tonelli, M.

doi:10.1007/s00340-010-4099-2

Cited by 12 publications

(12 citation statements)

References 19 publications

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“…It can be noticed that the spectroscopic quality parameter X¼O 4 /O 6 is 0.715 in the Nd:LGGG crystal, which is smaller than the criteria (0.984) for Nd 3 þ doped laser crystals. This result indicates that the emission from 4 F 3/2 to the 4 I 11/2 level is more feasible than that to the ground state [7]. A similar phenomenon can be found in Nd:GGG [7], Nd:YAG [19] and Nd:YVO 4 [20].…”

Section: Spectral Propertiessupporting

confidence: 76%

“…This result indicates that the emission from 4 F 3/2 to the 4 I 11/2 level is more feasible than that to the ground state [7]. A similar phenomenon can be found in Nd:GGG [7], Nd:YAG [19] and Nd:YVO 4 [20]. With the obtained intensity parameters, the spontaneous-emission probabilities A, the branching ratio b cal and the radiative lifetime t r can be calculated, as shown in Table 3.…”

Section: Spectral Propertiessupporting

confidence: 61%

“…As an isomorph of GGG, the Nd:LGGG crystal with Nd 3 þ doping level of 0.53 at% and Lu 3 þ concentration of 13.6 at% was grown by the Cz method and possesses similar properties to those of Nd:GGG [5]. Studies on spectroscopy and laser performance demonstrate that the Nd:LGGG crystal is suitable for Q-switching and mode-locking operations because of its broader fluorescence line width [6][7][8]. However, all these reported results about the Nd:LGGG crystal were obtained just from one composite crystal doped with 13.6 at% Lu ions relative to dodecahedral ions.…”

Section: Introductionmentioning

confidence: 98%

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Growth and characterization of Nd:LGGG laser crystal

Fu¹,

Jia²,

Li³

et al. 2012

Journal of Crystal Growth

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Section: Spectral Propertiessupporting

confidence: 76%

Section: Spectral Propertiessupporting

confidence: 61%

Section: Introductionmentioning

confidence: 98%

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Growth and characterization of Nd:LGGG laser crystal

Fu¹,

Jia²,

Li³

et al. 2012

Journal of Crystal Growth

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“…We have done a complete spectroscopic analysis of Nd:LGGG crystal, and it was shown that this crystal was a typical multi-centers garnet laser crystal for Nd ions [16]. More importantly, Nd:LGGG crystal had a broad emission band ranging from 930 to 942 nm as shown in Fig.…”

Section: Introductionmentioning

confidence: 98%

Continuous-wave and passively Q-switched laser of Nd:LGGG crystal at 0.93 μm

Jia¹,

Zhang²,

Li³

et al. 2011

Laser Phys. Lett.

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We demonstrated a diode end-pumped continuouswave (CW) and passively Q-switched (PQS) dual-wavelength laser at about 0.93 μm with Nd:(Lu x Gd 1−x ) 3 Ga 5 O 12 (Nd:LGGG) crystal for the first time. The maximum CW output power of 244 mW was obtained with the optical-optical conversion efficiency of 6.2% and the slope efficiency of 8.1%, respectively. The PQS performance was obtained with V 3+ :YAG crystal as the saturable absorber. The shortest pulse width was achieved to be 259 ns with the pulse repetition rate of 130 kHz. The laser spectrum was found to be dual-wavelength with respective wavelength of 933.0 and 936.8 nm for both CW and passive Q-switching regime.

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“…Generally speaking, nonlinear optical frequency conversion technologies, such as optical parametric oscillator (OPO) and stimulated Raman 1 3 41 Page 2 of 7 have a smaller emission cross section and larger energy storage capacity than conventional Nd-doped crystals. Moreover, the initial spectroscopic analysis shows that there are three intense peaks near 1060 nm with comparable emission cross sections [26]. Hence, Nd:LGGG is also a suitable laser medium for dual-or multi-wavelength laser sources.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental studies on coexistent OPO and SRS from a KTiOPO4 pumped by an AO Q-switched Nd:LGGG laser

Qiao

Zhao

et al. 2016

Appl. Phys. B

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scattering (SRS), are common and propitious ways to obtain multi-wavelengths. During the past decades, various kinds of OPO operations have been investigated and it is shown that OPO technology can generate widely tunable coherent radiation [6][7][8]. As another efficient frequency conversion method, stimulated Raman scattering (SRS) has been already demonstrated and widely used for creating intense coherent radiation over the visible and near infrared [9][10][11]. In recent years, to pursue more convenient multiwavelength laser sources, the investigation by combining χ (2) and χ (3) for nonlinear frequency conversions in a same crystal has become a research hotspot. The related investigations show that the combination of χ (2) and χ (3) nonlinear frequency conversions can obtain multi-wavelengths efficiently [12][13][14][15][16][17]. As an excellent nonlinear crystal, KTi-OPO 4 (KTP) has the merits of good mechanical and optical properties, high damage threshold and possibility for noncritical phase matching. Moreover, the anisotropic Raman spectra, Raman gain coefficient and strongest Raman scattering of KTP about 2 cm/GW and 270 cm −1 have been reported [18,19]. Consequently, it has attracted a lot of attention in research field of frequency doubling, . However, up to now, the combination of OPO and SRS to obtain multi-wavelengths by using KTP as simultaneous multi-functional medium has rarely been reported. Recently, although simultaneous OPO and SRS processes from a single KTP pumped by a passively Q-switched laser were realized [24], there was no related theoretical analysis.As a derivative of Nd:Gd 3 Ga 5 O 12 (Nd:GGG) crystal, the isotropy disordered crystal Nd:LGGG has been considered as an excellent medium for the diode-pumped solid-state laser due to its good mechanical, thermal and optical properties. What is more, due to its inhomogeneous broadening absorption and emission bands [25], Nd:LGGG crystal may Abstract Coexistent intracavity KTiOPO 4 optical parametric oscillator (OPO) and stimulated Raman scattering (SRS) processes pumped by an acousto-optical Q-switched Nd:Lu x Gd 3−x Ga 5 O 12 (Nd:LGGG) laser were presented for the first time. The Stokes radiations at 1093.2/1125.8 nm and a signal wave of 1570 nm were generated. At an incident pump power of 9.25 W and pulse repetition rate of 3 kHz, the maximum output powers of 375 mW at 1570 nm and 98 mW at 1093.2/1125.8 nm were obtained for the signal wave and Stokes radiations, respectively, corresponding to a total conversion efficiency of 5.1 %. A set of coupled rate equations for coexistent OPO and SRS processes was developed, and the numerical solutions agreed with the experiment results.

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Spectroscopic analysis of Nd3+ doped (Lu x + Gd1−x )3Ga5O12 crystal

Cited by 12 publications

References 19 publications

Growth and characterization of Nd:LGGG laser crystal

Growth and characterization of Nd:LGGG laser crystal

Continuous-wave and passively Q-switched laser of Nd:LGGG crystal at 0.93 μm

Theoretical and experimental studies on coexistent OPO and SRS from a KTiOPO4 pumped by an AO Q-switched Nd:LGGG laser

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