Kerr-lens mode locking of a diode-pumped Yb:KGW laser using an additional intracavity Kerr medium

Akbari, R.

doi:10.1088/1612-202x/aac97a

Cited by 61 publications

(10 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reason for the popularity of the KGW is the strong anisotropy in its optical and physical properties [59][60] as well as high optical quality. The latter also made it a popular gain medium for diode-pumped lasers in the CW and pulsed regimes [61][62][63][64][65][66]. The radius of curvature (ROC) of the focusing mirror M3 has a strong effect on the quality of the generated CR beam and the details have been discussed in Ref.…”

Section: Methodsmentioning

confidence: 99%

Diode-pumped Yb:CALGO laser with conical refraction output

Reza

Akbari

Fedorova

et al. 2020

Solid State Lasers XXIX: Technology and Devices

View full text Add to dashboard Cite

A high power conical refraction (CR) laser was demonstrated based on Yb:CALGO laser crystal with a separate intracavity CR element. The CR laser delivered the maximum output power of 6.25 W at 25 W of incident pump power which is the highest output power for the CR lasers to date. The separation of the CR element from the laser gain medium reduced the complexity of laser pumping. The generated CR laser beam exhibited excellent quality with well-resolved concentric rings and the Poggendorff dark ring.

show abstract

Section: Methodsmentioning

confidence: 99%

Diode-pumped Yb:CALGO laser with conical refraction output

Reza

Akbari

Fedorova

et al. 2020

Solid State Lasers XXIX: Technology and Devices

View full text Add to dashboard Cite

show abstract

“…The CR crystal was an 18 mm-long anti-reflection coated KGW crystal which was cut along its optical axis. KGW crystals are wellknown for the CR effect [38][39][40][41][42], have good optical quality [11] and are typically used as host for Nd-and Yb-ion lasers [43][44][45][46][47][48][49][50][51][52][53]. A photograph of the developed laser is shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

High power Nd:YVO-KGW conical refraction laser

Howlader

Nadimi²,

Waritanant

et al. 2019

Laser Resonators, Microresonators, and Beam Control XXI

View full text Add to dashboard Cite

We have demonstrated the highest conical refraction (CR) laser output power to date by placing a CR crystal inside of a diode-pumped Nd:YVO laser cavity. The CR crystal did not have a significant influence on laser output power as well as efficiency. The CR laser produced the maximum output power of 3.68 W with the slope efficiency of 42 % and opticalto-optical efficiency of 34 %. Therefore, this approach could be an attractive pathway for further power scaling of the CR lasers.

show abstract

“…In traditional KLM-based oscillators, the Kerr-lensing effect and light amplification are both provided by the same laser crystal, imposing certain restrictions on the laser design. As has been demonstrated for KLM thin-disk lasers [184,291] and diode-pumped KLM bulk lasers [292][293][294], the use of an additional nonlinear medium inside the cavity can strongly enhance the Kerr-lensing effect, while a complete decoupling between the gain and Kerr medium is also feasible. As a consequence, the gain crystal position can be chosen for maximum laser gain, since the Kerr lensing is optimized independently by choosing suitable positions, thicknesses and materials for the additional Kerr plate.…”

Section: )mentioning

confidence: 99%

“…x,y 10) combined with large pump spot diameters in the laser crystal [294]. However, note that the additional telescope increases the range of paramters that need to be adjusted for modelocked operation, and changing the distances within one telescope critically affects the beam diameters in the other telescope [295].…”

Section: )mentioning

confidence: 99%

A New Generation of Ultrafast Oscillators for Mid-Infrared Applications

Nagl¹

2021

Springer Theses

View full text Add to dashboard Cite

The mid-infrared (MIR) spectral range with wavelengths between 2 µm and 20 µm holds tremendous potential for the study of complex biological systems, given the abundance of intense and unique molecular absorption lines that can be detected. Consequently, spectroscopic applications of mid-infrared radiation have garnered enormous attention in recent years. A particularly striking example is the combination of multi-MHz-repetition-rate, few-cycle MIR light sources with electric-field-resolved techniques, enabling the recording of amplitude-and phase-resolved molecular signals with unparalleled specificity and shot noise limited sensitivity. Despite the ever-growing research demand, their widespread use is severely hampered by the lack of low-noise, compact, and ultrafast laser systems.In this dissertation, a new generation of table-top mid-infrared laser sources is presented, bringing cutting-edge laser diode technology and few-cycle Cr 2+ :ZnS/ZnSe solid-state oscillators together for the first time. Not only have these laser systems proven to reliably provide coherent radiation in the 2 µm to 3 µm region, the simultaneous reduction in size and complexity, accompanied by an improved overall efficiency and -most importantly -noise performance, renders this approach as pioneering for future MIR applications.In total, three laser systems are developed, each of them pushing the frontiers of directly diode-pumped laser technology. The first one is driven by a single-emitter indium phosphide laser diode and delivers more than 500 mW of output power combined with pulse durations as short as 45 fs. With this first ever directly diodepumped Kerr-lens mode-locked (KLM) Cr 2+ :ZnS/ZnSe oscillator, experimental results confirm a highly stable operation. In addition, amplitude noise measurements reveal an excellent low-noise performance of the mode-locked laser output.Driven by the desire to match and exceed the performance of more mature fiber-laser-pumped counterparts and also to boost the efficiency of the envisaged downstream applications, the output of two single-emitter pump laser diodes is carefully combined and implemented into a second-generation design. The achieved peak powers are almost three-times higher compared to before, while the low-noise performance of the KLM output is maintained.xii Typically, the design architecture of laser systems used for generating mid-infrared radiation up to several tens of microns includes a sophisticated chain of amplification, pulse compression and parametric conversion stages. Using a powerful few-cycle mid-infrared oscillator as driving laser source instead not only significantly improves the effectiveness of these nonlinear schemes, but could even supersede the need for initial amplification. The presented third-generation system brings the directly diode-pumped Cr 2+ :ZnS/ZnSe solid-state laser technology to a new level; with output peak powers reaching 1 MW and pulse durations as short as 28 fs, direct generation of CEP-stable mid-infrared pulses in a nonlinear optical cryst...

show abstract

Kerr-lens mode locking of a diode-pumped Yb:KGW laser using an additional intracavity Kerr medium

Cited by 61 publications

References 61 publications

Diode-pumped Yb:CALGO laser with conical refraction output

Diode-pumped Yb:CALGO laser with conical refraction output

High power Nd:YVO-KGW conical refraction laser

A New Generation of Ultrafast Oscillators for Mid-Infrared Applications

Contact Info

Product

Resources

About