Calculations of optimum phase match parameters for the biaxial crystal KTiOPO4

Yao, Jianquan; Fahlen, T. S.

doi:10.1063/1.332850

Cited by 181 publications

(55 citation statements)

References 2 publications

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“…5͒. Our calculated results for PM directions are identical to those obtained by Yao et al 28 In the case of Fig. 4, both type-I and type-II PM directions are shown in Fig.…”

Section: Methodssupporting

confidence: 80%

“…Among various PM directions, there exists an OPM, which is determined by the effective nonlinear coefficient. For the particular case of a KTP crystal, the calculated OPM direction is at = 90°and = 21.5°, 28 for a fundamental beam with = 1064 nm. These calculated values are in very good agreement with experimentally measured OPM direction for KTP.…”

Section: ͑1͒mentioning

confidence: 99%

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Collinear phase matching for second harmonic generation using conoscopic interferometry

Puri

2010

Journal of Applied Physics

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The problem of finding phase-matching directions in noncentrosymmetric biaxial crystals is simplified here by the use of Conoscopic interferometry. Based on vector relations for wave propagation in birefringent media and solutions to phase-matching equations, we show that phase matching directions can be located on the conoscopic interferograms and that fringe numbers for dark-isochromes can be used as a guide to find phase-matching directions for a biaxial crystal. This technique can be generalized and extended to any anisotropic crystal. We have demonstrated this method for the particular case of a biaxial KTiOPO 4 crystal, where it is found to be particularly suitable for finding the optimum-phase-matching directions.

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“…5͒. Our calculated results for PM directions are identical to those obtained by Yao et al 28 In the case of Fig. 4, both type-I and type-II PM directions are shown in Fig.…”

Section: Methodssupporting

confidence: 80%

Section: ͑1͒mentioning

confidence: 99%

Collinear phase matching for second harmonic generation using conoscopic interferometry

Puri

2010

Journal of Applied Physics

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“…Our calculations based on the relatively simple transcendental equations derived by Yao et al [63], predict that no phasematched SHG is possible below 1617 nm. LIS enters Hobden class 13 at 1617 nm, class 11 at 1783 nm, class 10 at 2353 nm, and class 9 at 2675 nm, then it goes back to class 10 at 5493 nm, to class 11 at 6111 nm, to class 13 at 8224 nm, and finally no SHG phase-matching is possible again above 8710 nm.…”

Section: A Effective Nonlinearity and Hobden Classificationmentioning

confidence: 99%

Optical, vibrational, thermal, electrical, damage, and phase-matching properties of lithium thioindate

et al. 2004

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Lithium thioindate (LiInS2) is a new nonlinear chalcogenide biaxial material transparent from 0.4 to 12 µm, that has been successfully grown in large sizes and good optical quality. We report on new physical properties that are relevant for laser and nonlinear optics applications. With respect to AgGaS(e)2 ternary chalcopyrite materials, LiInS2 displays a nearly-isotropic thermal expansion behavior, a 5-times larger thermal conductivity associated with high optical damage thresholds, and an extremely low intensity-dependent absorption allowing direct high-power downconversion from the near-IR to the deep mid-IR. Continuous-wave difference-frequency generation (5-11 µm) of Ti:sapphire laser sources is reported for the first time.

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“…Thus, properties around these axes can locally be approximated as an orthorhombic biaxial distribution. In this case, the well-known double-layer surface of refractive indices [32] can be extended to complex optical indices, by introducing complex optical indices n j = n j + iκ j , j=x, y, z in the dielectric frame, assuming the weak absorption hypothesis with κ j << n j [33]. Such an approach allows the analytical calculation of the refractive indices and absorption coefficients, from Eq.…”

Section: Modelmentioning

confidence: 99%

Orientation and polarization dependence of both the absorption and the laser efficiency around the optic axis in monoclinic $$\hbox {Ho}^{3+}$$ Ho 3 + :KYW

et al. 2015

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singularity of the index surface along the optic axes of these crystals, collimated laser beams undergo a conical distribution of the energy propagation that corresponds to an internal conical refraction. However, no practical application was immediately found for this effect after its discovery. It has been studied sporadically during the twentieth century [2][3][4]. Nowadays, some applications, trying to take advantage of this effect, are under investigation as beam transformation [5-9], optical tweezers [10,11], microscopy [12] and laser sources [13][14][15][16]. This recent increase in publications on this effect can be explained by the availability of biaxial crystals with good optical quality needed to observe the conical refraction (CR). Even if the diffraction theory, proposed in 1978 [17] and reformulated in 2004 [18], is able to well predict the CR pattern, the resonant mode inside a laser cavity is still not well known up to now.Lasing along the optic axis in KGd(WO 4 ) 2 (KGW) has gained a lot of interest since this orientation has been reported to be an athermal direction [19]. Then, several studies have reported the effect of conical refraction along this orientation [13][14][15]. The thermo-optic properties in such orientation have been recently measured [20]. They reported an astigmatic thermal lens along the optic axis of neodymium-doped KGW. This is not in agreement with the very good beam quality observed in [14] and rises the question of the influence on the beam quality of the conical refraction.Furthermore, for lasers, spectroscopic properties are of great influence on the overall performance. In case of a biaxial crystal, those properties are strongly dependent on the orientation and on the polarization. Those properties have been well described in another monoclinic host, the neodymium-doped YCa 4 O(BO 3 ) 3 (YCOB) [21]. However, for the holmium-doped KY(WO 4 ) 2 (KYW) monoclinic crystal used in this paper, which is very similar to KGW Abstract We report on the absorption profile of the monoclinic holmium-doped KY(WO 4 ) 2 crystal near the optic axis for the maximal absorption wavelength at 1960 nm. The full angular distribution of the absorption coefficient at the vicinity of such optical singularity has been experimentally and numerically investigated. Furthermore, laser experiments along the optic axis have been carried out. Socalled conical refraction laser and classical Gaussian laser operation are compared near the optic axis, taking into account the complex absorption profile.

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Calculations of optimum phase match parameters for the biaxial crystal KTiOPO4

Cited by 181 publications

References 2 publications

Collinear phase matching for second harmonic generation using conoscopic interferometry

Collinear phase matching for second harmonic generation using conoscopic interferometry

Optical, vibrational, thermal, electrical, damage, and phase-matching properties of lithium thioindate

Orientation and polarization dependence of both the absorption and the laser efficiency around the optic axis in monoclinic $$\hbox {Ho}^{3+}$$ Ho 3 + :KYW

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