Revisiting of LED pumped bulk laser: first demonstration of Nd:YVO_4 LED pumped laser

Barbet, Adrien; Balembois, François; Paul, A. E.; Blanchot, Jean-Philippe; Viotti, Anne-Lise; Sabater, J.; Druon, Frédéric; Georges, Patrick

doi:10.1364/ol.39.006731

Cited by 39 publications

(16 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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

View full text Add to dashboard Cite

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

show abstract

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

View full text Add to dashboard Cite

show abstract

“…In 2014, Adrien Barbet and his coworkers used an LED-pumped Nd:YVO 4 laser with a pump energy of 7.4 mJ. The maximum output energy of 40 µJ was obtained with a duration of 65 µs in the quasi-continuous-wave (QCW) regime [16]. In 2016, a pulsed energy of 360 µJ was obtained using a Ce:YAG luminescent concentrator in the QCW regime [17].…”

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

View full text Add to dashboard Cite

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%.

show abstract

“…However, LEDs are incoherent sources with limited irradiance: typically, in the order of 100 W/cm². This is enough to demonstrate the LED-pumping of Nd:doped lasers [13][14][15][16][17] but not for Ti:sapphire. Indeed, as transition metal doped gain medium, Ti:sapphire exhibits a very low σ.τ product (namely emission cross section σ by lifetime τ), typically two orders of magnitude below Nd:doped materials.…”

mentioning

confidence: 99%

Light-emitting diodes: a new paradigm for Ti:sapphire pumping

Pichon¹,

Barbet²,

Blanchot³

et al. 2018

Optica

Self Cite

View full text Add to dashboard Cite

Ti:sapphire presents unequaled tuning properties. However, because of a short lifetime, the energy cannot be stored in Ti 3+ upper level which makes this gain medium difficult to pump. Hence, the size, price and complexity of femtosecond laser chains are partially driven by their pump source. We present a novel concept to pump Ti:Sapphire based on light-emitting diodes (LEDs) which gathers ruggedness, compactness, simplicity and low price. Combining LEDs and a Ce:LuAG luminescent concentrator, we report the first LED-pumped Ti:sapphire laser. With 2240 blue LEDs (at 450 nm) in pulsed regime (10 Hz, 15 µs), the pump module has a maximum emission at 530 nm and delivers up to 20.9 mJ with an irradiance of 9.9 kW/cm². This low-cost and compact pump system, among the brightest incoherent sources ever developed, enables a laser emission in Ti:sapphire (32 µJ at 790 nm). The tunability of the laser is demonstrated between 755 nm and 845 nm. The double pass small signal gain in the cavity is numerically simulated and measured to reach 1.066.

show abstract

Revisiting of LED pumped bulk laser: first demonstration of Nd:YVO_4 LED pumped laser

Cited by 39 publications

References 20 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

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

Light-emitting diodes: a new paradigm for Ti:sapphire pumping

Contact Info

Product

Resources

About