Passively mode-locked Yb:KLu(WO_4)_2 thin-disk oscillator operated in the positive and negative dispersion regime

Palmer, Guido; Schultze, Marcel; Siegel, M.; Emons, Moritz; Bünting, Udo; Morgner, Uwe

doi:10.1364/ol.33.001608

Cited by 62 publications

(51 citation statements)

References 16 publications

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“…So far, all high-power thin disk lasers used rare-earthdoped crystalline materials such as: garnets (YAG [28], LuAG [51]), sesquioxides (Sc 2 O 3 [52], Lu 2 O 3 [20], LuScO 3 [19]), tungstates (KYW [52], KGW [52], KLuW [53], NGW [54]), vanadates (LuVO [55], YVO [55], GdVO [56]), and borates (YCOB [57], LSB [58]). The doping ions were Yb 3+ [28], Nd 3+ [59], Ho 3+ [60], and Tm 3+ [61].…”

Section: Gain Materials With Larger Emission Bandwidthmentioning

confidence: 99%

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High-power ultrafast thin disk laser oscillators and their potential for sub-100-femtosecond pulse generation

et al. 2009

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Ultrafast thin disk laser oscillators achieve the highest average output powers and pulse energies of any mode-locked laser oscillator technology. The thin disk concept avoids thermal problems occurring in conventional high-power rod or slab lasers and enables high-power TEM 00 operation with broadband gain materials. Stable and self-starting passive pulse formation is achieved with semiconductor saturable absorber mirrors (SESAMs). The key components of ultrafast thin disk lasers, such as gain material, SESAM, and dispersive cavity mirrors, are all used in reflection. This is an advantage for the generation of ultrashort pulses with excellent temporal, spectral, and spatial properties because the pulses are not affected by large nonlinearities in the oscillator. Output powers close to 100 W and pulse energies above 10 µJ are directly obtained without any additional amplification, which makes these lasers interesting for a growing number of industrial and scientific applications such as material processing or driving experiments in high-field science. Ultrafast thin disk lasers are based on a power-scalable concept, and substantially higher power levels appear feasible. However, both the highest power levels and pulse energies are currently only achieved with Yb:YAG as the gain material, which limits the gain bandwidth and therefore the achievable pulse duration to 700 to 800 fs in It is important to evaluate their suitability for power scaling in the thin disk laser geometry. In this paper, we review the development of ultrafast thin disk lasers with shorter pulse durations. We discuss the requirements on the gain materials and compare different Yb-doped host materials. The recently developed sesquioxide materials are particularly promising as they enabled the highest optical-tooptical efficiency (43%) and shortest pulse duration (227 fs) ever achieved with a mode-locked thin disk laser.

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Section: Gain Materials With Larger Emission Bandwidthmentioning

confidence: 99%

“…Recently, 440-fs pulses have been realized with an average output power exceeding 25 W with Yb:KLuW. Furthermore, chirped-pulse operation of a thin disk laser oscillator was investigated for the first time with this material [53].…”

Section: Yb:tungstatesmentioning

confidence: 99%

High-power ultrafast thin disk laser oscillators and their potential for sub-100-femtosecond pulse generation

et al. 2009

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“…In the current work, we use Yb:YAG for power-scaling because thin disks with sufficiently large diameters and excellent quality are commercially available. However, numerous other promising materials for TDLs are currently being investigated in the thin disk geometry [9][10][11][12], in particular materials with broad emission bandwidths for the generation of short pulses [13]. An important example is the family of cubic sesquioxides [14][15][16] ) and supports shorter pulse durations with a larger emission bandwidth (Δλ = 9 nm for Yb:YAG and Δλ = 13 nm for Yb:Lu 2 O 3 ).…”

Section: Introductionmentioning

confidence: 99%

275 W average output power from a femtosecond thin disk oscillator operated in a vacuum environment

Saraceno¹,

Emaury²,

Heckl³

et al. 2012

Opt. Express

192

150

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Abstract:We present an ultrafast thin disk laser that generates an average output power of 275 W, which is higher than any other modelocked laser oscillator. It is based on the gain material Yb:YAG and operates at a pulse duration of 583 fs and a repetition rate of 16.3 MHz resulting in a pulse energy of 16.9 μJ and a peak power of 25.6 MW. A SESAM designed for high damage threshold initiated and stabilized soliton modelocking. We reduced the nonlinearity of the atmosphere inside the cavity by several orders of magnitude by operating the oscillator in a vacuum environment. Thus soliton modelocking was achieved at moderate amounts of self-phase modulation and negative group delay dispersion. Our approach opens a new avenue for power scaling femtosecond oscillators to the kW level. 435-453 (1996). 19201-19208 (2010). Huber, and U. Keller, "High-power ultrafast thin disk laser oscillators and their potential for sub-100-femtosecond pulse generation," Appl. Published in OpticsExpress 20, issue 21, 23535-23541, 2012 which should be used for any reference to this

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“…That could be done by using the technique of chirped-pulse-oscillator (CPO). This technique is well-established in the fiber 24 and Ti-sapphire lasers 25,26 , and has recently been demonstrated with the Cr:YAG 27 and Ybdoped thin-disk lasers 28,29 . For Cr:ZnSe the analytical theory 30 predicts pulse energies up to 0.5 µJ 31 and initial demonstration of CPO technique has already been performed for Cr:ZnSe as well as Cr:ZnS lasers 19 .…”

Section: Chirped Pulse (Cpo) Regimementioning

confidence: 99%

1 Watt femtosecond mid-IR Cr:ZnS laser

2013

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A room-temperature Kerr-Lens modelocked (KLM) Cr:ZnS laser generates <70 fs pulses duration (about eight optical cycles) with 5.6 nJ pulse energy and over 100 nm FWHM spectral width at 105-157 MHz repetition rates. The laser produces 1 W average output power at 20% optical efficiency, limited by the available Er:fiber pump. For further pulse energy scaling we also realized the chirped-pulse regime, with 0.8-2 ps pulse durations. The demonstrated applications of such mid-IR source range from extra-and intra-cavity spectroscopy to subharmonic OPO pumping. For environmentally-protected delivery we suggest and realize duration-preserving soliton delivery in a ZBLAN fiber. Further bandwidth increase is demonstrated by 2.0-2.8 µm supercontinuum generation in a chalcogenide fiber.

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Passively mode-locked Yb:KLu(WO_4)_2 thin-disk oscillator operated in the positive and negative dispersion regime

Cited by 62 publications

References 16 publications

High-power ultrafast thin disk laser oscillators and their potential for sub-100-femtosecond pulse generation

High-power ultrafast thin disk laser oscillators and their potential for sub-100-femtosecond pulse generation

275 W average output power from a femtosecond thin disk oscillator operated in a vacuum environment

1 Watt femtosecond mid-IR Cr:ZnS laser

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