Frequency Doubled/Tripled Dual Wavelength Laser Based on Cascaded PPMgLN Crystal

Abstract

Abstract: In this paper, a compact green and near-infrared two-color continuous wave laser source with emission wavelengths at 516 nm and 775 nm are demonstrated, respectively. A cascaded periodically poled Mg doped lithium niobate crystal is designed and fabricated for simultaneous conversion of second harmonic generation(SHG) and third harmonic generation(THG) of communication wavelength, the output of green and near-infrared laser can be obtained at the same temperature. By set up a single pass laser measurement system, 0.15 mW green light at 516 nm and 1.19 mW light at 775 nm are obtained with 2 W pump power and the crystal temperature is controlled at 30.8 ℃. The experimental results will provide an important case for compact dual wavelength collinear laser which pumped by a single laser.

Key words: periodically poled MgO∶LiNbO₃, quasi phase matching, second harmonic generation, third harmonic generation

CLC Number:

O734

SUN Jie, CHEN Huaixi, ZHANG Xinbin, FENG Xinkai, LI Guangwei, LIANG Wanguo. Frequency Doubled/Tripled Dual Wavelength Laser Based on Cascaded PPMgLN Crystal[J]. Journal of Synthetic Crystals, 2021, 50(7): 1386-1390.

References

[1] 阮永丰,许强,林林.蓝绿光波段激光技术与材料的研究进展[J].人工晶体学报,2002,31(3):266-276.
RUAN Y F, XU Q, LIN L. Progress in the technology and materials of blue-green lasers[J]. Journal of Synthetic Crystals, 2002, 31(3): 266-276(in Chinese).
[2] JIANG D L, YANG Z, LIU G X, et al. A novel 450-nm blue laser system for surgical applications: efficacy of specific laser-tissue interactions in bladder soft tissue[J]. Lasers in Medical Science, 2019, 34(4): 807-813.
[3] NAKATSU Y, NAGAO Y, KOZURU K, et al. High-efficiency blue and green laser diodes for laser displays[C]//SPIE OPTO. Proc SPIE 10918, Gallium Nitride Materials and Devices XIV, San Francisco, California, USA. 2019, 1091: 109181D.
[4] ZONG Q S, BO Y, GUO C, et al. High brightness narrow-linewidth microsecond pulse green laser by frequency doubling of a master oscillator power amplifier Nd∶YAG laser[J]. Optics & Laser Technology, 2018, 106: 294-298.
[5] SCHÖNBECK A, THIES F, SCHNABEL R. 13 dB squeezed vacuum states at 1 550 nm from 12 mW external pump power at 775 nm[J]. Optics Letters, 2018, 43(1): 110-113.
[6] POTVIN S, GENEST J. Dual-comb spectroscopy using frequency-doubled combs around 775 nm[J]. Optics Express, 2013, 21(25): 30707-30715.
[7] KOBAT D, DURST M E, NISHIMURA N, et al. Deep tissue multiphoton microscopy using longer wavelength excitation[J]. Optics Express, 2009, 17(16): 13354-13364.
[8] WALLERAND J P, ROBERTSSON L, MA L S, et al. Absolute frequency measurement of molecular iodine lines at 514.7 nm, interrogated by a frequency-doubled Yb-doped fibre laser[J]. Metrologia, 2006, 43(3): 294-298.
[9] PULLEN M G, CHAPMAN J J, KIELPINSKI D. Efficient generation of >2 W of green light by single-pass frequency doubling in PPMgLN[J]. Applied Optics, 2008, 47(10): 1397-1400.
[10] JENSEN O B, HANSEN A K, MÜLLER A, et al. Efficient generation of 3.5 W laser light at 515 nm by frequency doubling a single-frequency high power DBR tapered diode laser[J]. Optics Communications, 2017, 392: 167-170.
[11] WANG F Y, ZHU S N, LI K F, et al. Third-harmonic generation in a one-dimensional photonic-crystal-based amorphous nanocavity[J]. Applied Physics Letters, 2006, 88(7): 071102.
[12] SEDERBERG S, ELEZZABI A Y. Coherent visible-light-generation enhancement in silicon-based nanoplasmonic waveguides via third-harmonic conversion[J]. Physical Review Letters, 2015, 114(22): 227401.
[13] PHILIPPE C, CHEA E, NISHIDA Y, et al. Efficient third harmonic generation of a CW-fibered 1.5 μm laser diode[J]. Applied Physics B, 2016, 122(10): 1-5.
[14] BURNS W K, MCELHANON W, GOLDBERG L. Second harmonic generation in field poled, quasi-phase-matched, bulk LiNbO₃[J]. IEEE Photonics Technology Letters, 1994, 6(2): 252-254.
[15] GU H, LIU H H. Transversely pumped yellow-green laser using color centers in the lithium fluoride crystal at room temperature[J]. Optics Communications, 2002, 201(1/2/3): 113-116.
[16] 孙军,郝永鑫,张玲,等.铌酸锂晶体及其应用概述[J].人工晶体学报,2020,49(6):947-964.
SUN J, HAO Y X, ZHANG L, et al. Brief review of lithium niobate crystal and its applications[J]. Journal of Synthetic Crystals, 2020, 49(6): 947-964(in Chinese).
[17] GAYER O, SACKS Z, GALUN E, et al. Temperature and wavelength dependent refractive index equations for MgO-doped congruent and stoichiometric LiNbO₃[J]. Applied Physics B, 2008, 91(2): 343-348.
[18] MILLER G D, BYER R L, HARRIS S E, et al. Periodically poled lithium niobate: modeling fabrication and nonlinear-optical performance[EB/OL]. 1998.
[19] ISHIZUKI H, SHOJI I, TAIRA T. Periodical poling characteristics of congruent MgO∶LiNbO₃ crystals at elevated temperature[J]. Applied Physics Letters, 2003, 82(23): 4062-4064.
[20] MIZUUCHI K, MORIKAWA A, SUGITA T, et al. Electric-field poling in Mg-doped LiNbO₃[J]. Journal of Applied Physics, 2004, 96(11): 6585-6590.
[21] NAKAMURA K, KURZ J, PARAMESWARAN K, et al. Periodic poling of magnesium-oxide-doped lithium niobate[J]. Journal of Applied Physics, 2002, 91(7): 4528-4534.