2007
DOI: 10.1364/ol.32.002783
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Polarization-tunable Yb:KGW laser based on internal conical refraction

Abstract: Using internal conical refraction, we demonstrate an Yb:KGW laser where the polarization state can be arbitrarily altered without any additional cavity components. The extinction ratio can also be altered between 1:1 and 40:1. The maximum output power achieved was 8.6 W at a slope efficiency of 60.5% with respect to incident pump power. This equals the power performance of a standard Yb:KGW laser used for reference.

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Cited by 33 publications
(25 citation statements)
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“…A similar analysis was made by Belafhal [31]. Hellström and co-workers, designed a Yb:KGW laser based on CR and reported transverse intensity patterns obtained with low values of ρ 0 , although no detailed investigation on this issue can be found [84]. The first real experimental attempt to take profit of the ρ 0 parameter was carried out by Peet, who proposed the use of the biaxial crystals as a versatile mode converter between Heremite-Gauss and Laguerre-Gauss beams throughout the CR phenomenon [76].…”
Section: Introductionmentioning
confidence: 69%
“…A similar analysis was made by Belafhal [31]. Hellström and co-workers, designed a Yb:KGW laser based on CR and reported transverse intensity patterns obtained with low values of ρ 0 , although no detailed investigation on this issue can be found [84]. The first real experimental attempt to take profit of the ρ 0 parameter was carried out by Peet, who proposed the use of the biaxial crystals as a versatile mode converter between Heremite-Gauss and Laguerre-Gauss beams throughout the CR phenomenon [76].…”
Section: Introductionmentioning
confidence: 69%
“…Thus, although O-cut crystals will possess no birefringence at room-temperature, their thermooptic properties will vary with light polarization. As a result, for a so-called "conical refraction" laser [34,35] based on O-cut crystal, laser output can be still partially polarized for thermal-lenssensitive cavities. For p-g plane, athermal directions are positioned symmetrically around N g and N p axes, as major and minor semiaxes of cross-section of ellipsoid of thermal expansion tensor correspond to these axes.…”
Section: Resultsmentioning
confidence: 99%
“…Therefore, several applications of this effect have recently been investigated, such as optical tweezers [5], particle trapping [6], beam shaping [7][8][9][10][11], and microscopy [12]. There are also some publications about laser operation along an optic axis of a biaxial crystal, the first publication being [13]. Using a short (3 mm long) biaxial crystal of a CR-cut ytterbium-doped KGdWO 4 2 (KGW), the output polarization of their laser was modified, by translating the output coupler mirror.…”
Section: Studies Of Conical Refraction (Cr) Have Recently Revivedmentioning
confidence: 99%