Thermal lens compensation by convex deformation of a flat mirror with variable annular force

Schwarz, Jens; Ramsey, Marc; Headley, Daniel; Rambo, Patrick K.; Smith, I. C.; Porter, J. L.

doi:10.1007/s00340-005-2033-9

Cited by 23 publications

(4 citation statements)

References 7 publications

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“…This compensation is best for the central part of the beam; however, the lensing of the outer part of the beam can deviate strongly from the paraxial case depending on the pump/heat load geometry [17]. It is feasible to compensate higher-order deviations with schemes incorporating a phase conjugating mirror [26], an adaptive mirror [27], or material with opposite thermal response (i.e., opposite dn/dt) [28]. In this work, thermal lens compensation of higher orders is not implemented and therefore acts as nonuniform loss.…”

Section: Management Of Thermally Induced Effects In the Dpss Booster mentioning

confidence: 99%

Hybrid master oscillator power amplifier system providing 10 mJ, 32 W, and 50 MW pulses for optical parametric chirped-pulse amplification pumping

et al. 2013

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We present a high-energy, high-average-power picosecond laser system based on a hybrid chain in a master oscillator power amplifier configuration. The chain is seeded by a Ti:sapphire oscillator, followed by a Ybdoped fiber preamplifier, a Nd:YAG-based regenerate amplifier, and a Nd:YVO 4-based single-pass amplifier. The final diode-pumped, solid-state amplifier is detailed and produces pulses with more than 10 mJ energy at 32 W average power with 207 ps duration, corresponding to 50 MW peak power. The picosecond pulse output is seeded and optically synchronized with the sub-5-fs oscillator for optical parametric chirped-pulse amplification pumping.

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Section: Management Of Thermally Induced Effects In the Dpss Booster mentioning

confidence: 99%

Hybrid master oscillator power amplifier system providing 10 mJ, 32 W, and 50 MW pulses for optical parametric chirped-pulse amplification pumping

et al. 2013

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“…Variable curvature mirror (VCM) is an advanced active optics component whose radius of curvature can be adjusted by an external force to satisfy the need of zoom imaging [1][2][3][4][5][6], thermal lens compensation [7][8][9][10]. These components are used on interferometric telescopes for pupil size stabilization upstream the beams recombination [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Elastic bending of variable curvature mirrors: validation of a simplified analytical method

Xie

Hugot

et al. 2019

Appl. Opt.

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This work explores the variable curvature mirror's (VCM) elastic bending rules through modeling it as a thin elastic plate with an exponential thickness distribution actuated with a uniform pressure under simply supported boundary conditions. By using the smallparameter method, the general analytical expression of a plate's deflection is worked out. The results calculated by the analytical solution are compared to the finite element analysis of a VCM model with the same specific parameters. We demonstrate that the two have a good correlation with the one the other. This analytical solution is an effective way to predict a VCM's deflection.

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“…[8][9][10][11] Therefore a lot of methods have been used to compensate for the thermal effects. [12][13][14][15][16][17][18][19][20][21][22][23] Usually to calculate the thermal effects of laser crystals, numerical finite element (FE) methods [24][25][26] are used because the currently known analytical models are limited. The most important disadvantage of FE simulations is the time needed for making the calculations, as several minutes or even hours are needed; but the computation that uses an analytical model for the thermal effects takes only a few seconds.…”

Section: Introductionmentioning

confidence: 99%

Analytical model for thermal lensing and spherical aberration in diode side-pumped Nd:YAG laser rod having Gaussian pump profile

Dindarlu¹,

Tehrani²,

Saghafifar³

et al. 2015

Chinese Phys. B

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In this paper, according to the temperature and strain distribution obtained by considering the Gaussian pump profile and dependence of physical properties on temperature, we derive an analytical model for refractive index variations of the diode side-pumped Nd:YAG laser rod. Then we evaluate this model by numerical solution and our maximum relative errors are 5% and 10% for variations caused by thermo-optical and thermo-mechanical effects; respectively. Finally, we present an analytical model for calculating the focal length of the thermal lens and spherical aberration. This model is evaluated by experimental results.

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Thermal lens compensation by convex deformation of a flat mirror with variable annular force

Cited by 23 publications

References 7 publications

Hybrid master oscillator power amplifier system providing 10 mJ, 32 W, and 50 MW pulses for optical parametric chirped-pulse amplification pumping

Hybrid master oscillator power amplifier system providing 10 mJ, 32 W, and 50 MW pulses for optical parametric chirped-pulse amplification pumping

Elastic bending of variable curvature mirrors: validation of a simplified analytical method

Analytical model for thermal lensing and spherical aberration in diode side-pumped Nd:YAG laser rod having Gaussian pump profile

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