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Dual-wavelength laser sources have important applications in the interferometry and the nonlinear-frequency-conversion generated mid-infrared or terahertz-band coherent radiation. Vertical-external-cavity surface-emitting lasers own outstanding advantages such as high output power, good beam quality and flexible emission wavelength, which make them very suitable for dual-wavelength running. In this paper, we employ a collinear Y-type cavity to produce a dual-wavelength laser. There are two semiconductor gain chips in the resonant cavity, one has an active region of In0.185Ga0.815As/GaAs strained multiple quantum wells and a designed wavelength of 960 nm, and the other has an active region of In0.26Ga0.74As/GaAsP0.02 strained multiple quantum wells and a target wavelength of 1080 nm. The peak wavelength of the photoluminescence of chip 1 is 950 nm, which is 10 nm shorter than the designed wavelength under weak pump, and the peak wavelength of the photoluminescence of chip 2 is 1094 nm, which is 14 nm longer than the target wavelength under low pump. When the pump power is increased, the peak wavelengths of the photoluminescence of two gain chips are both red-shifted. The oscillating laser wavelengths are centered at 953 nm and 1100 nm, the corresponding full width at half maximum (FWHM) values of the laser spectra are 1.1 nm and 2.7 nm, respectively. The wavelength spacing of the dual-wavelength is 147 nm, and the related mid-infrared coherent radiation is about 7.1 μm on the assumption that the dual-wavelength laser is used for difference frequency generation. When the absorbed pump power of each gain chip is 5.8 W, the total output power of the dual-wavelength laser reaches 293 mW at room temperature.
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Keywords:
- external cavity surface emitting laser /
- dual wavelength /
- Y- cavity /
- polarizing beam splitter
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图 1 双波长VECSEL实验装置示意图
Figure 1. Schematic of the experimental setup of dual-wavelength VECSEL.
图 2 只抽运增益芯片1时所得荧光和激光光谱
Figure 2. Photoluminescence and laser spectra when gain chip 1 is pumped only.
图 3 只抽运增益芯片2所得荧光和激光光谱
Figure 3. Photoluminescence and laser spectra when gain chip 2 is pumped only.
图 4 双波长VECSEL输出的激光光谱图
Figure 4. Laser spectra of the dual-wavelength VECSEL.
图 5 953 nm和1100 nm单独振荡以及双波长工作时VECSEL的输出功率
Figure 5. Output powers of the VECSEL when only 953 nm or 1100 nm mode oscillating, and dual-wavelength operating.
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[1] 苏俊宏 2003 红外与激光工程 32 359
Google Scholar
Su J 2003 Infrared Laser Eng. 32 359
Google Scholar
[2] 李践 2005 中国生物医学工程学报 24 237
Google Scholar
Li J 2005 Chin. J. Biomed. Eng. 24 237
Google Scholar
[3] Mao Q, Lit J W Y 2002 IEEE Photonic Tech. L. 14 1252
Google Scholar
[4] Schlager J B, Kawanishi S, Saruwatari M 1991 Electron. Lett. 27 2072
Google Scholar
[5] Kawase K, Mizuno M, Sohma S, Takahashi H, Taniuchi T, Urata Y, Wada S, Tashiro H, Ito H 1999 Opt. Lett. 24 1065
Google Scholar
[6] Tittel F K, Richter D, Fried A 2003 Mid-infrared Laser Applications in Spectroscopy (Springer, Berlin, Heidelberg)
pp458−529 [7] Beck M, Hofstetter D, Aellen T, Faist J, Oesterle U, Ilegems M, Gini E, Melchior H 2002 Science 295 301
Google Scholar
[8] Willer U, Saraji M, Khorsandi A, Geiser P, Schade W 2006 Opt. Laser Eng. 44 699
Google Scholar
[9] Waynant R W, Ilev I K, Gannot I 2001 Phil. Trans. R. Soc. A 359 635
Google Scholar
[10] Jeon M Y, Kim N, Shin J, Jeong J S, Han S P, Lee C W, Leem Y A, Yee D S, Chun H S, Park K H 2010 Opt. Express 18 12291
Google Scholar
[11] Jackson S D 2012 Nat. Photonics 6 423
Google Scholar
[12] Lee B G, Belkin M A , Audet R , MacArthur J, Diehl L, Pflügl C, Capasso F, Oakley D C, Chapman D, Napoleone A, Bour D, Corzine S, Höfler G, Faist J 2007 Appl. Phys. Lett. 91 231101
Google Scholar
[13] Schiessl U P, Rohr J 1999 Infrared Phys. Tech. 40 325
Google Scholar
[14] Budni P A, Pomeranz L A, Lemons M L, Miller C A, Mosto J R, Chicklis E P 2000 J. Opt. Soc. Am 17 723
Google Scholar
[15] Hastie J E, Calvez S, Dawson M D, Leinonen T, Laakso A, Lyytikäinen J, Pessa M 2005 Opt. Express 13 77
Google Scholar
[16] Fan L, Hader J, Schillgalies M, Fallahi M, Zakharian A R, Moloney J V, Bedford R, MurrayJ T, Koch S W, Stolz W 2005 IEEE Photonic Tech. L. 17 1764
Google Scholar
[17] Fallahi M, Fan L, Kaneda Y, Hessenius C, Hader J, Li H, Moloney J V, Kunert B, Stolz W, Koch S W, Murray J, Bedford R 2008 IEEE Photonic Tech. L. 20 1700
Google Scholar
[18] Maclean A J, Kemp A J, Calvez S, Kim J Y, Kim T, Dawson M D, Burns D 2008 IEEE J. Quantum Elect. 44 216
Google Scholar
[19] Fallahi M, Hessenius C, Kaneda Y, Hader J, Moloney J V, Kunert B, Stolz W, Koch S W 2009 Nonlinear Optics: Materials, Fundamentals and Applications Honolulu, Hawaii, July 12−17, 2009 pNThC1
[20] De Groot P J, McGarvey J A 1994 US Patent 5 371
[21] Keller U, Tropper A C 2006 Phys. Rep. 429 67
Google Scholar
[22] Zhu R, Wang S, Qiu X, Chen X, Jiang M, Guo-Yu H, Zhang P, Song Y 2018 J. Lumin. 204 663
Google Scholar
[23] Abram R H, Gardner K S, Riis E, Ferguson A I 2004 Opt. Express 12 5434
Google Scholar
[24] Alfieri C G, Waldburger D, Golling M, Keller U 2018 IEEE Photonic Tech. L. 30 525
Google Scholar
[25] Jasik A, Sokół A K, Broda A, Sankowska I, Wójcik-Jedlinska A, Wasiak M, Kubacka-Traczyk J, Muszalski J 2016 Appl. Phys. B 122 23
[26] Polanik M 2015 Annual Report, Institute of Optoelectronics, Ulm University 3
[27] Leinonen T, Ranta S, Laakso A, Morozov Y, Saarinen M, Pessa M 2007 Opt. Express 15 13451
Google Scholar
[28] Hessenius C, Lukowski M, Fallahi M 2012 Appl. Phys. Lett. 101 121110
Google Scholar
[29] Lukowski M, Hessenius C, Bedford R, Fallagi M 2015 Opt. Lett. 40 4174
Google Scholar
[30] Zhang F, Gaafar M, Möller C, Stolz W, Koch M, Rahimi-Iman A 2016 IEEE Photonic Tech. L. 28 927
[31] Sandusky J V, Brueck S R J 1996 IEEE Photonic Tech. L. 8 313
Google Scholar
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