Stimulated Raman Scattering in the Mid IR Range 2.31-2.75-3.7 μm in a BaWO4 Crystal under 1.9 and 1.56 μm Pumping

Basiev, Tasoltan T.; Basieva, M N; Doroshenko, Maxim E.; Fedorov, Vladimir V.; Осико, В. В.; Mirov, Sergey

doi:10.1364/assp.2006.mb10

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…Table 2 shows a comparison of our results with the results obtained under other experimental conditions. Note, that optical damages of the BWO crystal surface were reported in several papers [11,[17][18][19][20], but in a number of them, for example in [20], their values were not presented. To complete the data, we also measured the optical damage thresholds of BWO crystals at 1030 nm under the pulse-periodic laser mode (1 KHz pulse repetition rate), under the same conditions as in [11].…”

Section: Resultsmentioning

confidence: 99%

Ablation of BaWO4 Crystal by Ultrashort Laser Pulses

et al. 2020

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Ablation of BaWO4 Raman crystals with different impurity concentrations by ultrashort laser pulses was experimentally studied. Laser pulses with duration varying from 0.3 ps to 1.6 ps at wavelengths of 515 nm and 1030 nm were applied. A single-pulse optical damage threshold of the crystal surface changed from 1.3 J/cm2 to 4.2 J/cm2 depending on the laser pulse parameters and BaWO4 crystal purity. The optical damage threshold under multi-pulse irradiation was an order of magnitude less.

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Section: Resultsmentioning

confidence: 99%

Ablation of BaWO4 Crystal by Ultrashort Laser Pulses

et al. 2020

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“…Given these considerations, commercially available source candidates for high repetition μ-lidar sources are Raman-shifted lasers, 82 optical parametric oscillators, 83,84 emerging quantum-cascade laser, 85,–87 and pulsed CO 2 lasers 88 (not considering the military-grade chemical deuterium fluoride lasers 89 at 3.8 μm). Some CO 2 lasers are constructed with average powers up to 100 kW.…”

Section: Proposed Remote Assessment Of Microscopic Informationmentioning

confidence: 99%

On the Exploitation of Mid-infrared Iridescence of Plumage for Remote Classification of Nocturnal Migrating Birds

et al. 2013

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A challenging task in ornithology lies in identifying high-altitude nocturnal migrating bird species and genders. While the current approaches including radar, lunar obscuration, and single-band thermal imaging provide means of detection, a more detailed spectral or polarimetric analysis of light has the potential for retrieval of additional information whereby the species and sex could be determined. In this paper, we explore remote classification opportunities provided by iridescent features within feathers in the mid-infrared region. Our approach first involves characterizing the microstructural features of the feather by using rotation and straining, and a scheme for their remote detection is proposed by correlating these microstructural changes to spectral and polarimetric effects. Furthermore, we simulate the spectral signature of the entire bird by using a model that demonstrates how classification would be achieved. Finally, we apply infrared hyperspectral polarization imaging, showing that the net iridescent effect persists for the bird as a whole.

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“…The first demonstrations of SRS conversion in 2 µm using Tm:KY(WO 4 ) 2 and BaWO 4 crystals were reported more than a decade ago [9,10]. However, these reports are missing the information about the obtained output energy values.…”

Section: Introductionmentioning

confidence: 99%

An Electro-Optic, Actively Q-Switched Tm:YAP/KGW External-Cavity Raman Laser at 2273 nm and 2344 nm

et al. 2021

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This paper presents a KGW Raman laser with an external-cavity configuration in the 2 μm region. The Raman laser is pumped by unique, electro-optic, actively Q-switched Tm:Yap laser, emitting at 1935 nm. The electro-optic modulation is based on a KLTN crystal, enabling the use of a short crystal length, with a relatively low driving voltage. Due to the KGW bi-axial properties, the Raman laser is able to lase separately at two different output wavelengths, 2273 and 2344 nm. The output energies and pulse durations for these two lines are 0.42 mJ/pulse at 18.2 ns, and 0.416 mJ/pulse at 14.7 ns, respectively. This is the first implementation of a KGW crystal pumped by an electro-optic active Q-switched Tm:Yap laser in the SWIR spectral range.

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Stimulated Raman Scattering in the Mid IR Range 2.31-2.75-3.7 μm in a BaWO4 Crystal under 1.9 and 1.56 μm Pumping

Cited by 5 publications

References 4 publications

Ablation of BaWO4 Crystal by Ultrashort Laser Pulses

Ablation of BaWO4 Crystal by Ultrashort Laser Pulses

On the Exploitation of Mid-infrared Iridescence of Plumage for Remote Classification of Nocturnal Migrating Birds

An Electro-Optic, Actively Q-Switched Tm:YAP/KGW External-Cavity Raman Laser at 2273 nm and 2344 nm

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