Measurement of Multi-Stokes Ultrashort Pulse Shapes of Synchronously Pumped Stimulated Raman Scattering on Combined Vibrational Modes in a BaWO4 Crystal

Tereshchenko, Dmitry P.; Peganov, Egor A.; Smetanin, S. N.; Papashvili, A.G.; Shashkov, E. V.; Ивлева, Л. И.; Dunaeva, E.E.; Voronina, I.S.; Frank, Milan

doi:10.3390/cryst12040495

Cited by 5 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Излучение лазера накачки 1 после прохода вентиля Фарадея 2 фокусировалось вогнутым зеркалом 3 в ВКРактивный элемент 4, помещенный во внешний зигза- гообразный оптический резонатор, состоящий из двух вогнутых 5 и 6 и двух плоских 7 и 8 зеркал. В качестве лазера накачки использована высокомощная генераторно-усилительная лазерная система на кристаллах YAlO 3 : Nd 3+ с длиной волны λ p = 1079 nm, генерирующая в режиме пассивной синхронизации мод лазерного резонатора цуг импульсов длительностью 440 ns с длительностью отдельных импульсов t p = 64 ps и периодом их повторения 8 ns при энергии цуга лазерных импульсов E train = 18 mJ, что соответствовало энергии отдельных импульсов до E p = 320 µJ [15]. Лазер накачки был изолирован от ВКР-лазера с помощью вентиля Фарадея.…”

Section: оптическая схема лазерной системыunclassified

Обогащение спектра многоволновой пикосекундной генерации синхронно-накачиваемого ВКР-лазера на кристалле Sr(MoO_4)-=SUB=-0.8-=/SUB=-(WO_4)-=SUB=-0.2-=/SUB=-

Терещенко¹,

Сметанин²,

Папашвили³

et al. 2023

Журнал Технической Физики

View full text Add to dashboard Cite

For the first time to our knowledge, a single-phase solid solution Sr(MoO4)0.8(WO4)0.2 was used as an active medium of a Raman laser. Using the high-intensity synchronous picosecond pumping satisfying the condition of phase capture of the parametric Raman interaction on the second vibrational mode made it possible to oscillate six components of Raman radiation with a combined frequency shift on the first (888 cm–1) and second (327 cm–1) vibrational modes in the wavelength range of 1194-1396 nm. Oscillation efficiency of the multiwavelength Raman laser radiation was as high as 10%. By detuning the Raman laser cavity length, the pulse shortening down to 6 ps for the Raman laser radiation components with the combined frequency shift was obtained, which is an order of magnitude shorter than the pumping pulse duration (64 ps).

show abstract

Section: оптическая схема лазерной системыunclassified

Обогащение спектра многоволновой пикосекундной генерации синхронно-накачиваемого ВКР-лазера на кристалле Sr(MoO_4)-=SUB=-0.8-=/SUB=-(WO_4)-=SUB=-0.2-=/SUB=-

Терещенко¹,

Сметанин²,

Папашвили³

et al. 2023

Журнал Технической Физики

View full text Add to dashboard Cite

show abstract

“…The system operating in the passive mode locking regime generated 440 ns-long trains of pulses with a duration of individual pulses t p = 64 ps and their repetition period 8 ns. The energy of the laser pulse train was E train = 18 mJ, which corresponded to the energy of individual pulses up to E p = 320 µJ [15]. The pumping laser was isolated from the Raman laser by means of a Faraday isolator.…”

Section: Optical Scheme Of the Laser Systemmentioning

confidence: 99%

Spectrum multiplexing of multiwavelength picosecond oscillation of synchronously pumped Raman laser based on a Sr(MoO_4)-=SUB=-0.8-=/SUB=-(WO_4)-=SUB=-0.2-=/SUB=- crystal

et al. 2023

View full text Add to dashboard Cite

For the first time to our knowledge, a single-phase solid solution Sr(MoO_4)0.8(WO_4)0.2 was used as an active medium of a Raman laser. Using the high-intensity synchronous picosecond pumping satisfying the condition of phase capture of the parametric Raman interaction on the second vibrational mode made it possible to oscillate six components of Raman radiation with a combined frequency shift on the first (888 cm-1) and second (327 cm-1) vibrational modes in the wavelength range of 1194-1396 nm. Oscillation efficiency of the multiwavelength Raman laser radiation was as high as 10%. By detuning the Raman laser cavity length, the pulse shortening down to 6 ps for the Raman laser radiation components with the combined frequency shift was obtained, which is an order of magnitude shorter than the pumping pulse duration (64 ps). Keywords: stimulated Raman scattering, single-phase solid solution, vibrational mode, synchronous pumping.

show abstract

“…An important third-order nonlinear phenomenon is stimulated Raman scattering (SRS) [9]. A few theoretical investigations to the effect of anti-Stokes pulse with ultra-short pulse passive Qswitching [10]. Furthermore, some research uses the Stokes pulse for passive Q-switching [11].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Saturable Absorber Length Effect on Characteristics of Passive Q-Switching and Stokes with Anti-Stokes Pulses Generated in Laser System of Nd:YVO4

Saad,

Abdul-Kareem Mahdi Salih,

Asal

2024

UTJsci

View full text Add to dashboard Cite

The effect of the saturable absorbent material on the characteristics of a single laser pulse results from the passive Q-switching method, or two pulses. The first pulse is resulted from the passive Q-switching method and the other is resulted from Stokes pulse generated by the laser ray reaction with the Raman medium in the optical system. This study simulated this effect on the characteristics of three pulses (passive Q-switching pulse, Stokes pulse, and anti-Stokes pulse) simultaneously generated from one optical system . The optical system consists of Nd: YVO4, PbWO4, and Cr + 4: YAG as an effective medium, Raman medium, and saturable absorbent material, respectively. The modeling of the rate equations was used, and the Rung-Kutta-Fehelberg numerical method was used to solve the rate equations. The results show increased power of the pulses generated, requiring an increased length of the saturable absorber material used in the system. The results showed that at the shortest length used for the saturated absorbent material, the pulse duration and energy of the three generated pulses were PQS pulse (16.44ns, 1.39mJ), Stokes pulse (12.59ns, 1.148mJ) and anti-Stokes pulse (13.53ns, 1.59mJ), while at the longest length of the saturated absorbent material, the pulse duration and energy were PQS pulse (14.68ns, 1.50mJ), the Stokes pulse (11.41ns, 1.36mJ) and the anti-Stokes pulse (12.38ns, 1.86mJ).

show abstract

Measurement of Multi-Stokes Ultrashort Pulse Shapes of Synchronously Pumped Stimulated Raman Scattering on Combined Vibrational Modes in a BaWO4 Crystal

Cited by 5 publications

References 23 publications

Обогащение спектра многоволновой пикосекундной генерации синхронно-накачиваемого ВКР-лазера на кристалле Sr(MoO_4)-=SUB=-0.8-=/SUB=-(WO_4)-=SUB=-0.2-=/SUB=-

Обогащение спектра многоволновой пикосекундной генерации синхронно-накачиваемого ВКР-лазера на кристалле Sr(MoO_4)-=SUB=-0.8-=/SUB=-(WO_4)-=SUB=-0.2-=/SUB=-

Spectrum multiplexing of multiwavelength picosecond oscillation of synchronously pumped Raman laser based on a Sr(MoO_4)-=SUB=-0.8-=/SUB=-(WO_4)-=SUB=-0.2-=/SUB=- crystal

Investigation of Saturable Absorber Length Effect on Characteristics of Passive Q-Switching and Stokes with Anti-Stokes Pulses Generated in Laser System of Nd:YVO4

Contact Info

Product

Resources

About