Efficient 750-nm LED-pumped Nd:YAG laser

Huang, Kuo-Chung; Su, Cheng-Kuo; Lin, Ming-Tzer; Chiu, Yu-Chung; Huang, Yen-Chieh

doi:10.1364/oe.24.012043

Cited by 29 publications

(12 citation statements)

References 13 publications

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“…Recently, LED-pumping experienced a rebirth of interest driven by the solid-state lighting market. Various gain media and Nd 3+ doped media in particular are now directly pumped by LEDs [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

High-radiance light sources with LED-pumped luminescent concentrators applied to pump Nd:YAG passively Q-switched laser

Pichon

Barbet

Blengino³

et al. 2017

Optics & Laser Technology

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International audienceBy power scaling of LEDs pump concentrators we demonstrated a visible light source (centered at 550 nm) producing 294 W with a radiance of 668 W/cm2/sr in the air. Using more than 1100 LEDs, this setup represents one order of magnitude improvement in terms of output power and brightest of LED pump concentrator ever reported.We pushed further the concept of low cost high brightness light source using this concentrator to pump a very simple Nd:YAG laser in free running mode and in passively Q-switched regime using a Cr:YAG saturable absorber. Output energies up to 263 µJ with a pulse duration of 33 ns have been obtained at 1064 nm, leading to a peak power of 8 kW in a TEM00 mode

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Section: Introductionmentioning

confidence: 99%

High-radiance light sources with LED-pumped luminescent concentrators applied to pump Nd:YAG passively Q-switched laser

Pichon

Barbet

Blengino³

et al. 2017

Optics & Laser Technology

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“…Recently, several authors have described the LED-pumped Nd:YAG, Ce:Nd:YAG and Nd:YVO 4 lasers with several hundred micro-joules to milli-joules level of laser energy [1]- [8]. Different LED spectrum from blue at 460 nm [2], to near infrared spectrum at 750 and 810 nm [3], [7], [9], have been used for the optical pumping of the solidstate active medium. Moreover, green and amber LEDs at 520 and 592 nm, respectively [4], have been applied for the laser pumping.…”

Section: Introductionmentioning

confidence: 99%

Study of the Spatiotemporal Behavior of LED-Pumped Ce:Nd:YAG Laser

Tarkashvand

Farahbod

Hashemizadeh

2020

IJOP

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In this paper, the mode structure and time behavior of a LED-pumped Ce:Nd:YAG laser have been studied. Four blue LED bars with total 128 LEDs at 460 nm are utilized to pump a 3 mm diameter laser rod. Using a Cr 4+ :YAG passive optical switch with 96% initial transmission, and a low loss stable optical resonator and 0.7 J pumping energy, a single 17 micro-joules Q-switched laser pulse with 240 ns pulse-width and nearly TEM 00 mode profile was produced. By increasing the pumping energy E p up to 0.8 J, the mode structure remained intact. Further increasing of E p , the laser mode changed to TEM 10 . Numerical calculations show that the central high gain area of the laser rod and saturation mechanism of the passive Q-switch behaves like as a soft aperture to enforce the laser resonator to oscillate on a low order transverse mode. For laser free-running, the TEM 00 mode has not been achieved and the optical resonator produced high order transverse mode patterns.

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“…The continuing trend of LEDs to become more powerful will allow in the future for full-continuous-wave (cw) LED-pumped WGR lasers delivering several milliwatts of output power at low cost and with high reliability. Mirror-based LED-pumped bulk lasers have attracted much interest within recent years [18][19][20][21][22][23]. This report is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

LED-pumped whispering-gallery laser

2017

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A low-cost light-emitting diode (LED) is sufficient to pump a quasi-continuous-wave bidirectional high-Q whispering-gallery resonator laser made of Nd:YVO₄. This is remarkable because of the very limited spatial and spectral coherence of an LED. The LED, delivering up to 3.5 W, centered around 810 nm, is turned on in intervals of 100 µs duration, and for these periods a laser output exceeding 0.8 mW has been verified. Furthermore, 0.1-s-long laser pulses are demonstrated. To the best of our knowledge this is the first demonstration of an LED-pumped high-Q whispering-gallery laser. The concept can be extended easily to other laser active materials. A prospect is also to pump several of such lasers with a single LED

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Efficient 750-nm LED-pumped Nd:YAG laser

Cited by 29 publications

References 13 publications

High-radiance light sources with LED-pumped luminescent concentrators applied to pump Nd:YAG passively Q-switched laser

High-radiance light sources with LED-pumped luminescent concentrators applied to pump Nd:YAG passively Q-switched laser

Study of the Spatiotemporal Behavior of LED-Pumped Ce:Nd:YAG Laser

LED-pumped whispering-gallery laser

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