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مقالۀ پژوهشی: جبران اثرات نبود همسانی فاز گرمایی در تولید هماهنگ دوم توان بالا با استفاده از چرپشدگی بلور غیرخطی قطبیده دوره‌ای | ||
| فیزیک کاربردی ایران | ||
| دوره 12، شماره 4 - شماره پیاپی 31، دی 1401، صفحه 62-75 اصل مقاله (2.93 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22051/ijap.2022.40161.1277 | ||
| نویسنده | ||
| سعید قوامی صبوری* | ||
| دانشیار، دانشکده فیزیک، دانشگاه اصفهان، اصفهان، ایران | ||
| چکیده | ||
| اثرات حرارتی تاثیرات نامطلوبی در فرآیند تولید هماهنگ دوم به ویژه در توان‌های بالای لیزر دمش می‌گذارد. تولید توزیع دمایی نایکنواخت در بلور از راه جذب پرتوهای دمش و هماهنگ دوم منجر به افت شدید بازده تبدیل هماهنگ دوم می‌شود. این جذب به عنوان چشمه گرما در بلور عمل کرده و از باقی ماندن بلور در دمای همسانی فاز جلوگیری می‌کند، در نتیجه پدیده‌ای به نام نبود همسانی فاز گرمایی در بلور ایجاد می‌شود. در این مقاله ابتدا یک مدل نظری برای شبیه‌سازی اثرات حرارتی در تولید هماهنگ دوم شناسانده شده است. سپس با در نظر گرفتن یک بلور قطبیده دوره‌ای به عنوان بلور غیرخطی و افزودن چرپشدگی به دوره تناوب آن، راهکاری برای جبران نبود همسانی فاز گرمایی بیان شده است. نتایج شبیه‌سازی نشان می‌دهد که چرپشدگی یک بلور قطبی دوره‌ای سبب جبران اثرات گرمایی در بلور غیرخطی شده و تا حد زیادی افت بازده هماهنگ دوم را جبران می‌کند. به عنوان مثال، در توان دمش 20 وات اثرات حرارتی موجب کاهش بازده تبدیل هماهنگ دوم از 74 درصد به 18 درصد شده و با به کار بردن بلور قطبیده دوره‌ای چرپ‌شده بازده به 50 درصد رسیده است. | ||
| کلیدواژه‌ها | ||
| تولید هماهنگ دوم؛ اثرات حرارتی؛ بلورقطبیده دوره‌ای | ||
| عنوان مقاله [English] | ||
| Research Paper: Compensation of Thermal Phase Mismatch Effects in The High Power Second Harmonic Generation Using a Chirped Periodically Poled Non-linear Crystal | ||
| نویسندگان [English] | ||
| Saeed Ghavami Sabouri | ||
| Associate Professor, Faculty of Physics, University of Isfahan, Isfahan, Iran | ||
| چکیده [English] | ||
| Thermal effects strongly influence the process of second harmonic generation, especially at high fundamental powers. The generation of non-uniform temperature distribution in the crystal due to the absorption of fundamental and second harmonic waves leads to significant degradation of the efficiency of the second harmonic generation process. This absorption acts as a heat source in the crystal and prevents the crystal from remaining at the phase matching temperature, resulting in a phenomenon called thermal phase mismatch in the crystal. In this paper, first, a theoretical model to simulate the thermal effects in the second harmonic generation is introduced. Then, by considering a periodically poled crystal as a nonlinear crystal and adding a chirp to its periodicity, a solution to compensate for the thermal phase mismatch is presented. Simulation results show that the chirp of a periodically poled crystal compensates for the thermal effects on the nonlinear crystal and largely offsets the efficiency degradation in the second harmonic generation. For example, at the fundamental power of 20 W, the thermal effects reduce the second-harmonic conversion efficiency from 74% to 18% and using the chirped periodically poled crystal increases the efficiency to 50%. | ||
| کلیدواژه‌ها [English] | ||
| Second Harmonic Generation, Thermal Effects, Periodically Poled Crystal | ||
| مراجع | ||
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[1] Son S., Song J.-J., Kang J., and Kim C.-S., "Simultaneous Second Harmonic Generation of Multiple Wavelength Laser Outputs for Medical Sensing," Sensors (Basel, Switzerland) 11, 6125-6130,2011. [2] Cattaneo S. and Kauranen M., "Application of second-harmonic generation to retardation measurements," J. Opt. Soc. Am. B 20, 520-528, 2003. [3] Dwi Astuti W., Matsukuma H., Nakao M., Li K., Shimizu Y., and Gao W., "An Optical Frequency Domain Angle Measurement Method Based on Second Harmonic Generation," Sensors 21, 670, 2021. [4] Shao M., Liang F., Yu H., and Zhang H., "Angular engineering strategy of an additional periodic phase for widely tunable phase-matched deep-ultraviolet second harmonic generation," Light: Science & Applications 11, 31, 2022. [5] Li J., Hu G., Shi L., He N., Li D., Shang Q., Zhang Q., Fu H., Zhou L., Xiong W., Guan J., Wang J., He S., and Chen L., "Full-color enhanced second harmonic generation using rainbow trapping in ultrathin hyperbolic metamaterials," Nature Communications 12, 6425, 2021. [6] Vengelis J., Stasevičius I., Stankevičiūtė K., Jarutis V., Grigonis R., Vengris M., and Sirutkaitis V., "Characteristics of optical parametric oscillators synchronously pumped by second harmonic of femtosecond Yb:KGW laser," Optics Communications 338, 277-287, 2015. [7] Kumar S.C., Samanta G.K., Devi K., Sanguinetti S., and Ebrahim-Zadeh M., "Single-frequency, high-power, continuous-wave fiber-laser-pumped Ti:sapphire laser," Appl. Opt. 51, 15-20, 2012. [8] McDonagh L. and. Wallenstein, R "Low-noise 62 W CW intracavity-doubled TEM00 Nd:YVO4 green laser pumped at 888 nm," Opt. Lett. 32, 802-804, 2007. [9] Gurzadian G.G., Handbook of nonlinear optical crystals / V.G. Dmitriev, G.G. Gurzadyan, D.N. Nikogosyan, Springer series in optical sciences ; v. 64. (Springer-Verlag, Berlin ; New York, 1991. [10] Mu X. and Ding Y.J., "Investigation of damage mechanisms of KTiOPO4 crystals by use of a continuous-wave argon laser," Appl. Opt. 39, 3099-3103, 2000. [11] Meetei T.S., Chandrasekaran R., Prasath R K., Boomadevi S., and Pandiyan K., "Estimation of second harmonic generation efficiency of various quasi-phase matching grating structures," Journal of Nonlinear Optical Physics & Materials 26, 1750043, 2017. [12] Kashak T., Flannigan L., and Xu C.-q., "A systematic study of PPLN length dependence in intracavity SHG," Scientific Reports 11, 22246, 2021. [13] Sabouri S.G., Kumar S.C., Khorsandi A., and Ebrahim-Zadeh M., "Thermal Effects in High-Power Continuous-Wave Single-Pass Second Harmonic Generation," IEEE Journal of Selected Topics in Quantum Electronics 20, 563-572, 2014. [14] Louchev O.A., Yu N.E., Kurimura S., and Kitamura K., "Thermal inhibition of high-power second-harmonic generation in periodically poled LiNbO3 and LiTaO3 crystals," Applied Physics Letters 87, 131101, 2005. [15] Hashemi S.S., Sabouri S.G., and Khorsandi A., "The effect of thermal de-phasing on the beam quality of a high-power single-pass second harmonic generation," Journal of Optics 20, 045502, 2018. [16] Sabouri S.G., Suddapalli C.K., Khorsandi A., and Ebrahim-Zadeh M., "Focusing Optimization for High-Power Continuous-Wave Second-Harmonic Generation in the Presence of Thermal Effects," IEEE Journal of Selected Topics in Quantum Electronics 21, 185-192, 2015. [17] Ivanov G.Y., Cherpak P.S., Konyashkin A.V., and Ryabushkin O.A., "Accurate measurements of longitudinal temperature distribution of PPLN crystal in the process of second-harmonic generation," Appl. Opt. 59, 7330-7337, 2020. [18] Sabouri S.G. and Khorsandi A., "Engineered aperiodically poled nonlinear crystal for high-power second-harmonic generation," J. Opt. Soc. Am. B 33, 2493-2501, 2016. [19] Sabouri S.G. and Khorsandi A., "Active Control of Thermal Dephasing Effect in High Power Continuous Wave Single-Pass Second Harmonic Generation," IEEE Journal of Quantum Electronics 51, 1-8, 2015. [20] Peng L., Hong L., and Li Z., "Theoretical solution of second-harmonic generation in periodically poled lithium niobate and chirped periodically poled lithium niobate thin film via quasi-phase-matching," Physical Review A 104, 053503, 2021. [21] Chen B.-Q., Zhang C., Hu C.-Y., Liu R.-J., and Li Z.-Y., "High-Efficiency Broadband High-Harmonic Generation from a Single Quasi-Phase-Matching Nonlinear Crystal," Physical Review Letters 115, 083902, 2015. [22] Imeshev G., Arbore M. A., Fejer M. M., Galvanauskas A., Fermann M., and Harter D., "Ultrashort-pulse second-harmonic generation with longitudinally nonuniform quasi-phase-matching gratings: pulse compression and shaping," J. Opt. Soc. Am. B 17, 304-318, 2000. [23] Chen B.-Q., Ren M.-L., Liu R.-J., Zhang C., Sheng Y., Ma B.-Q., and Li Z.-Y., "Simultaneous broadband generation of second and third harmonics from chirped nonlinear photonic crystals," Light: Science & Applications 3, e189-e189, 2014. [24] Kraus A.B. a. A.D., Heat Transfer Handbook (Wiley, USA, 2003). [25] Jundt D.H., "Temperature-dependent Sellmeier equation for the index of refraction, ne, in congruent lithium niobate," Opt. Lett. 22, 1553-1555, 1997. [26] Boyd G.D. and Kleinman D.A., "Parametric Interaction of Focused Gaussian Light Beams," Journal of Applied Physics 39, 3597-3639, 1968. [27] Samanta G.K., Kumar S.C., Mathew M., Canalias C., Pasiskevicius V., Laurell F., and Ebrahim-Zadeh M., "High-power, continuous-wave, second-harmonic generation at 532 nm in periodically poled KTiOPO4," Optics Letters 33, 2955-2957, 2008. [28] Shukla M.K., Kumar S., and Das R., "High-power, single-frequency, single-pass second-harmonic-generation by optimally focused Yb-fiber laser," in Advanced Solid State Lasers, OSA Technical Digest (online) (Optical Society of America, 2014), ATh2A.22. | ||
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