Thermal stresses in the laser disc from a tetragonal c -cut crystal

Yumashev, K. V.; Loiko, Pavel

doi:10.1016/j.optcom.2014.07.078

Cited by 7 publications

(11 citation statements)

References 26 publications

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“…Thus, from Eq. (14) it is easy to derive an expression for the optical power of the thermal lens related to the photoelastic effect. Then, combining this with Eq.…”

Section: Resultsmentioning

confidence: 99%

“…Variation of the refractive index was calculated with Eq. (14) and orientation of the x′ r and x′ θ axeswith Eq. (18).…”

Section: Resultsmentioning

confidence: 99%

“…Analytical expression for the end-bulging term χ′ for any c-cut tetragonal crystal was derived in [14,15] using the method of Airy stress function [20]. However, analytical expressions for the photo-elastic term χ″ and, more specifically, for the photo-elastic constants Q A(B) have been never derived for laser discs from tetragonal crystals.…”

Section: Physical Modelmentioning

confidence: 99%

“…In an analytical form, this has been performed for laser discs from isotropic and high-symmetry (cubic) materials [4,13]. Recently, the first part (derivation of thermal stresses and strains) was also done for the discs from tetragonal crystals [14,15].…”

Section: Introductionmentioning

confidence: 99%

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Thermal lensing in diode-pumped [001]-cut tetragonal crystals

Yumashev

Loiko

2015

Optics Communications

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“…Thus, from Eq. (14) it is easy to derive an expression for the optical power of the thermal lens related to the photoelastic effect. Then, combining this with Eq.…”

Section: Resultsmentioning

confidence: 99%

“…Variation of the refractive index was calculated with Eq. (14) and orientation of the x′ r and x′ θ axeswith Eq. (18).…”

Section: Resultsmentioning

confidence: 99%

Section: Physical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermal lensing in diode-pumped [001]-cut tetragonal crystals

Yumashev

Loiko

2015

Optics Communications

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“…We recently studied the thermal stress-strain problem for a tetragonal crystal with a special cut along the c-axis, taking into account the anisotropy of elastic properties [22]. In thispaper, we turn our attention to the more complicated case of a disc from an a-cut crystal with direction-dependent thermal expansion in the plane of the disc.…”

Section: Laser Physicsmentioning

confidence: 99%

Thermal stresses and end-bulging in the laser disc from a tetragonal [1 0 0]-cut crystal

Yumashev¹,

Loiko²

2014

Laser Phys.

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The problem of thermal stresses and strains is considered in relation to the laser disc from a tetragonal crystal cut along [1 0 0] axis under plane stress approximation (for diode-pumped lasers). The formula describing the contribution of end-bulging of the disc to the optical power of the thermal lens is obtained. It is shown that end-bulging for anisotropic crystal is partially responsible for the astigmatism of the thermal lens. The relationship between the anisotropy of thermal expansion and the position of the principal meridional planes of the thermal lens is shown. Thermal stresses, strains and displacements, as well as the end-bulging term of the 'generalized' thermo-optic coefficient are calculated for a disc from an a-cut yttrium vanadate, Nd:YVO 4 . The stress fracture issues for this crystal are also analyzed.

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Effect of elastic anisotropy on thermally induced distortions of a laser beam in single cubic syngony crystals with radial cooling. Part I

Vyatkin¹,

Хазанов²

2020

Quantum Electron.

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We have studied thermally induced distortions of a beam in single cubic syngony crystals of all symmetry groups with an anisotropic elastic stiffness tensor. The arithmetic mean and the difference between the thermally induced phase incursions of eigenpolarisations, as well as the angle of incidence of these polarisations, are calculated for a long rod and a thin disk with radial cooling under uniform volume pumping of the active element. The position of the specific crystal orientations unrelated to its symmetry elements is investigated. The effective values of the thermo-optical constant Q in two specific orientations, as well as the thermo-optical constant P in an arbitrary orientation, are found.

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Thermal stresses in the laser disc from a tetragonal c -cut crystal

Cited by 7 publications

References 26 publications

Thermal lensing in diode-pumped [001]-cut tetragonal crystals

Thermal lensing in diode-pumped [001]-cut tetragonal crystals

Thermal stresses and end-bulging in the laser disc from a tetragonal [1 0 0]-cut crystal

Effect of elastic anisotropy on thermally induced distortions of a laser beam in single cubic syngony crystals with radial cooling. Part I

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