Flexibly Controlling the Power Ratio of Dual-Wavelength SESAM-Based Mode-Locked Lasers With Wedged-Bonded Nd:YVO4/Nd:GdVO4 Crystals

A new diffusion-bonded Nd:YVO4/Nd:GdVO4 hetero-structure crystal with oblique interface between two vanadate materials is exploited to achieve dual-wavelength passively mode-locked laser with a semiconductor saturable absorber mirror. Experimental results show that the power ratio of the two emission wavelengths can be flexibly adjusted by controlling the vertical position of pump beam. In the optimally balanced dual-wavelength operation, the maximum total output power of 2.5 W is obtained at an incident pump power of 11 W and the pulse width is measured to be 24.7 ps with pulse repetition rate of 296.6 MHz. The mode-locked output pulse is further found to exhibit an optically beating with pulse duration of 1.8 ps at a repetition rate of 0.318 THz.

[1]  Yung-Fu Chen,et al.  cw dual-wavelength operation of a diode-end-pumped Nd:YVO4 laser , 2000 .

[2]  Lei Liu,et al.  Switchable, dual-wavelength passively mode-locked ultrafast fiber laser based on a single-wall carbon nanotube modelocker and intracavity loss tuning. , 2011, Optics express.

[3]  A. Ansmann,et al.  Dual‐wavelength Raman lidar observations of the extinction‐to‐backscatter ratio of Saharan dust , 2002 .

[4]  Yung-Hsin Chen,et al.  Efficient dual-wavelength diode-end-pumped laser with a diffusion-bonded Nd:YVO_4/Nd:GdVO_4 crystal , 2015 .

[5]  Y F Chen,et al.  Nd:YLF laser at cryogenic temperature with orthogonally polarized simultaneous emission at 1047 nm and 1053 nm. , 2014, Optics express.

[6]  P. Taday,et al.  Detection and identification of explosives using terahertz pulsed spectroscopic imaging , 2005 .

[7]  Brian M. Walsh,et al.  Dual wavelength lasers , 2010 .

[8]  Y. Chen,et al.  Efficient high-power terahertz beating in a dual-wavelength synchronously mode-locked laser with dual gain media. , 2014, Optics letters.

[9]  I. Bennion,et al.  Actively mode-locked tunable dual-wavelength erbium-doped fiber laser , 2002, IEEE Photonics Technology Letters.

[10]  F. Weigl,et al.  A generalized technique of two-wavelength, nondiffuse holographic interferometry. , 1971, Applied optics.

[11]  Y. Chen,et al.  Diode-end-pumped solid-state lasers with dual gain media for multi-wavelength emission , 2014 .

[12]  Xunmin Liu,et al.  Dual-Wavelength Passively Mode-Locked Nd:LGGG Laser With SESAM , 2014, IEEE Photonics Technology Letters.

[13]  X-C Zhang,et al.  Identification and classification of chemicals using terahertz reflective spectroscopic focal-plane imaging system. , 2006, Optics express.

[14]  Yung-fu Chen,et al.  Efficient Dual-Wavelength Synchronously Mode- Locked Picosecond Laser Operating on the 4F 3/2 → 4I11/2 Transition With Compactly Combined Dual Gain Media , 2015, IEEE Journal of Selected Topics in Quantum Electronics.

[15]  H. Shen,et al.  Operating conditions of continuous wave simultaneous dual wavelength laser in neodymium host crystals , 1999 .

[16]  Y. Chen,et al.  Efficient dual-wavelength laser at 946 and 1064 nm with compactly combined Nd:YAG and Nd:YVO4 crystals , 2013 .

[17]  G. Kitaeva.  Terahertz generation by means of optical lasers , 2008 .

[18]  P. Dao,et al.  Development of an intracavity-summed multiple-wavelength Nd:YAG laser for a rugged, solid-state sodium lidar system. , 1995, Applied optics.

[19]  Y. Chen,et al.  Orthogonally polarized dual-wavelength Nd:LuVO4 laser at 1086 nm and 1089 nm. , 2012, Optics express.

[20]  Yujie J. Ding,et al.  Compact and portable terahertz source by mixing two frequencies generated simultaneously by single solid-state laser , 2010, CLEO: 2011 - Laser Science to Photonic Applications.

[21]  Yung-fu Chen,et al.  Compact coupling scheme to achieve the synchronously dual self-mode-locked operation with a 35.2  THz optical beating. , 2017, Optics letters.

[22]  Satoshi Wada,et al.  Dual-wavelength mode-locked Yb∶YAG ceramic laser in single cavity , 2010, CLEO/QELS: 2010 Laser Science to Photonic Applications.