Neodymium YAG lasers pumped by light-emitting diodes

Bilak, V. I.; Goldobin, I S; Zverev, G. M.; Kuratev, I. I.; Pashkov, V. A.; Stel'Makh, M. F.; Tsvetkov, Yu. V.; Solov'eva, N. M.

doi:10.1070/qe1981v011n11abeh008630

Cited by 6 publications

(4 citation statements)

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“…In the 1970s, different works on neodymium lasers (such as Nd:YAG or Ndpentaphosphate) were published with LED as the pump source [3][4][5][6][7][8] . Laser effect was also demonstrated with an LED pumped Yb:YAG crystal 9 .…”

Section: Introductionmentioning

confidence: 99%

LED side-pumped Nd³⁺:YVO₄laser at room temperature

et al. 2015

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The lighting market has recently improved LED performance by orders of magnitudes. In parallel, massive production decreases dramatically LED price. Those improvements triggered new interests for LED pumping of lasers which was first studied in the early 1980s on neodymium doped and ytterbium doped lasers at low temperature. Since the 2000's, several research teams started to revisit the concept of LED pumped lasers: polymer laser, fiber laser and semiconductors have recently demonstrated laser effect under visible LED pumping. However, no experimental results were reported on LED pumped bulk crystals. In this paper, we demonstrated for the first time a LED pumped Nd:YVO4 laser operating at room temperature. We investigated two pumping wavelengths: in the amber around 600 nm and in the near infrared around 850 nm. The laser operated in quasi-cw-pumping regime to increase the LED intensity. We performed a two-mirror cavity transversely pumped by 36 LEDs. Laser operation was achieved at room temperature for the both pump wavelengths: a maximum output energy of 40µJ for an emitted energy of 7.4 mJ with infrared pumping and an energy of 11.7 µJ for an emitted energy or 2.3 mJ with amber pumping.This works demonstrated that LED pumping has an interesting potential to realize ultra-low-cost solid-state lasers operating in pulsed regime at kHz repetition rate and with energies in the mJ range.

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Section: Introductionmentioning

confidence: 99%

LED side-pumped Nd³⁺:YVO₄laser at room temperature

et al. 2015

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“…An LED pumping laser was first verified in a Dy:CaF 2 crystal in 1964 [4]. In the 1970s, several types of LED-pumped neodymium lasers (such as Nd 3+ doped crystals) were developed [5][6][7][8][9]. In these early years, the reported LED-pumped lasers were typically cooled by water or more complex structures.…”

Section: Introductionmentioning

confidence: 99%

High Stability LED-Pumped Nd:YVO4 Laser with a Cr:YAG for Passive Q-Switching

Hong

Zhao

et al. 2019

Crystals

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With improvements in light-emitting diode (LED) performance and a sharp decline in price, a light source with the irradiance of a laser and the cost of an LED is worthy of further study. We demonstrated a LED-pumped Nd:YVO4 laser in quasi-continuous-wave (QCW) and passively Q-switched (PQS) regime. With an incident pump energy of 6.28 mJ (150 μs pulses at 1 Hz), the Nd:YVO4 laser has an energy of 206 μJ at 1064 nm in the QCW regime. The optical conversion efficiency of the system is 4.1%, and the slope efficiency is 9.0%. A pulsed energy of 2.5 μJ was obtained with a duration of 897 ns (FWHM) in the PQS regime, which means the peak power is 2.79 W. The output energy stability is 97.54%.

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“…Because of their low cost, high environmental suitability, and long lifetime, LEDs have evolved into a viable option for solid-state lasers. [1][2][3][4][5][6][7] Recently, LED pumping has piqued the interest of newcomers. Several types of LED-pumped lasers were re-examined.…”

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confidence: 99%

Design and Development of a High-Performance LED-Side-Pumped Nd:YAG Rod Laser

Shen

Huang²,

Jiang³

et al. 2022

Chinese Phys. Lett.

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In this study we present a design and development of a high-performance light-emitting diode (LED)-side-pumped Nd:YAG rod laser with strong pulse energy, high efficiency, and consistency, very good beam quality, and high uniform pumping intensity in the active area which reduces the effects of thermal gradient significantly. A five-dimensional 810 nm LED array with a full-width-half-maximum (FWHM) of 30 nm was intended to achieve high coupling efficiency by putting the LED array as close together as possible to the side of the Nd:YAG laser rod for overcoming the large pumped divergence. Under 2.25 J pump energy, maximum single pulse energy of 35.86 mJ with duration of 1.24 μs at 1063.68 nm was obtained, equivalent to optical efficiency of 1.59% and a slope efficiency of 2.53%. The laser was set to repeat at a rate of 10 Hz with a beam quality factor of Mx 2 = 2.94 and My 2 = 3.35, as well as the output power stability was RMS < 4.1% and PTP < 7.3%. To the best of our ability, this is the highest performance for a LED-side-pumped Nd:YAG rod laser oscillator with a 10-mJ-level output ever reported.

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Neodymium YAG lasers pumped by light-emitting diodes

Cited by 6 publications

References 1 publication

LED side-pumped Nd³⁺:YVO₄laser at room temperature

LED side-pumped Nd³⁺:YVO₄laser at room temperature

High Stability LED-Pumped Nd:YVO4 Laser with a Cr:YAG for Passive Q-Switching

Design and Development of a High-Performance LED-Side-Pumped Nd:YAG Rod Laser

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Neodymium YAG lasers pumped by light-emitting diodes

Cited by 6 publications

References 1 publication

LED side-pumped Nd3+:YVO4laser at room temperature

LED side-pumped Nd3+:YVO4laser at room temperature

High Stability LED-Pumped Nd:YVO4 Laser with a Cr:YAG for Passive Q-Switching

Design and Development of a High-Performance LED-Side-Pumped Nd:YAG Rod Laser

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Product

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LED side-pumped Nd³⁺:YVO₄laser at room temperature

LED side-pumped Nd³⁺:YVO₄laser at room temperature