Nd:YAG ceramic laser obtained high slope-efficiency of 62% in high power applications

Qi, Yunfeng; Zhu, Xiaolei; Lou, Qihong; Ji, Jianghua; Dong, Junping; Wei, Yunrong

doi:10.1364/opex.13.008725

Cited by 57 publications

(18 citation statements)

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“…[11]). The several types of efficient diode pumped lasers made of ceramic materials [12][13][14][15][16] were demonstrated. The aim of this section was to model and characterize the thermo-optical properties of the Nd:YAG ceramics elaborated in the Institute of Electronic Materials Technology, Warsaw [17] in 2009.…”

Section: Investigations Of Thermo-optic Effects In Nd:yag Ceramicsmentioning

confidence: 99%

Analysis of thermo-optic effects in Nd:YAG ceramics disk under high heat load

et al. 2011

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The aims of paper were theoretical analysis of thermo-optic effects occurring inside laser elements under high heat load and its experimental verification for two particular cases: dichroic window and Nd:YAG ceramics disk. Transient thermal effects in dichroic mirrors and ceramic gain media were modeled applying COMSOL Multiphysics software and verified experimentally. Moreover, thermally induced distortions, thermally induced stresses and birefringence were calculated for gain elements of rod and disk shapes applying analytical, stationary model based on linear thermoelasticity theory. The 100-mm diameter dichroic mirrors made of BK7 and fused silica and gain disks made of Nd:YAG ceramics of 15-mm diameter and 3-mm thickness were prepared for experimental verification of the theoretical models. The special laboratory set-up enabling simultaneous registration of thermally induced birefringence and wavefront distortions was worked out. We have investigated the thermo-optical effects for different heat densities in range of 0.1 kW/cm 2 up to 50 kW/cm 2 changing the pump power , beam diameter or duty cycle. The experiments were carried out in lasing and non lasing conditions. The new method of measurement of heat conversion efficiency and absorption in mirrors based on threshold shearing interferometry was proposed and verified for dichroic mirror and ceramic Nd:YAG disk.

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Section: Investigations Of Thermo-optic Effects In Nd:yag Ceramicsmentioning

confidence: 99%

Analysis of thermo-optic effects in Nd:YAG ceramics disk under high heat load

et al. 2011

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“…It not only has some similar properties with solid state laser gain medium Nd:YAG crystal includ ing the upper level lifetime (234 μs @ 1064 nm), absorption cross section (8 × 10 -20 cm 2 ), extinction ratio (>40:1) and thermal conductivity (0.105 J/cm °C at 20°C), but also has the advantages in simple fabri cation process, low cost, high doping concentration and easy batch production [1][2][3][4][5][6]. Therefore, it is regarded as the most promising alternative medium for Nd:YAG crystal.…”

Section: Introductionmentioning

confidence: 99%

Short pulse width UV laser at 355 nm based on pulse LD side-pumped ceramic Nd:YAG and BBO electro-optical Q-switched

Bai¹,

Chen²,

Lu³

et al. 2011

Laser Phys.

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“…In thin-film coating, the smallest optical thickness (depth thickness) provide better coating [10]. Therefore, Ta 2 O 5 + TiO 2 material is the best to act as a back Nd-YAG Laser mirror.…”

mentioning

confidence: 99%

Study of Optical Specifications of HfO2/Y2O3, Sc2O3 + MgO, and Ta2O5 + TiO2 Used as Resonator Reflector for Nd:YAG Laser (1064 nm)

Amhed¹,

Ahmed²

2020

JAMP

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A theoretical design of a multi-layer for Nd:YAG mirrors resonator is described in this work. An output coupler was designed and fabricated by successive thin layers to achieve very high transmittance at optical wavelengths around 1064 nm for Nd:YAG mirrors resonator. The different film optical filters were used to control the transmittance and reflectance. The three samples of dielectric materials composed of HfO 2 /Y 2 O 3 , Sc 2 O 3 + MgO, and Ta 2 O 5 + TiO 2 were used and compared with each other in transmittance, reflectance, full width at half maximum (FWHM), physical thickness, optical thickness, geometric thickness, and incident angles by the software [1].

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Nd:YAG ceramic laser obtained high slope-efficiency of 62% in high power applications

Cited by 57 publications

References 0 publications

Analysis of thermo-optic effects in Nd:YAG ceramics disk under high heat load

Analysis of thermo-optic effects in Nd:YAG ceramics disk under high heat load

Short pulse width UV laser at 355 nm based on pulse LD side-pumped ceramic Nd:YAG and BBO electro-optical Q-switched

Study of Optical Specifications of HfO<sub>2</sub>/Y<sub>2</sub>O<sub>3</sub>, Sc<sub>2</sub>O<sub>3</sub> + MgO, and Ta<sub>2</sub>O<sub>5</sub> + TiO<sub>2</sub> Used as Resonator Reflector for Nd:YAG Laser (1064 nm)

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