Simultaneous dual-wavelength Q-switched Nd:YAG laser at 1052 and 1073  nm

Abstract

We report a continuous-wave dual-wavelength Nd:YAG laser at 1052 and 1073 nm, for the first time to the best of our knowledge, in free-running mode. The maximum output power reaches 6.64 W with slope efficiency of about 42.1% with respect to the absorbed power. Inserting a Cr:YAG saturable absorber, the dual-wavelength laser can operate in the Q-switching regime with maximum average output power of 880 mW. The minimum pulse width and the highest pulse repetition rate are 28 ns and 17.12 kHz, respectively. The dual-wavelength laser has potential to generate a 5.7 THz wave via the difference-frequency method.

Controlled multiwavelength operation of diode-pumped Nd:YAG laser at 1318, 1338 and 1356 nm with intracavity etalon

“…The dual-wavelength laser generation of Nd:YAG crystal has been investigated at the 4 F 3/2 → 4 I 11/2 and 4 F 3/2 → 4 I 13/2 transitions in many papers [12][13][14][15][16][17][18][19][20][21][22][23]. The dual-wavelength operation of Nd:YAG laser at the wavelengths of 1318 and 1338 nm is easy to obtain, since the values of the emission cross section for these transitions are very close [19][20][21][22][23].…”

Efficient multiwavelength operation of a diode-pumped Nd:YAlO3 laser at 1064, 1072 and 1079 nm

“…The dual-wavelength generation was demonstrated in lasers based on different neodymium-doped active media, including isotropic crystals Nd:YAG [9][10][11][12][13], Nd:LuAG [14], Nd:GGG [15], Nd:GYSGG [16], Nd:CNGG [17], Nd:LaF 3 [18] and anisotropic crystals Nd:YVO 4 [19][20][21][22][23][24][25][26][27][28][29], Nd:GdVO 4 [30][31][32][33][34], Nd:LuVO 4 [35,36], Nd:YLiF 4 [37][38][39][40][41], Nd:LuLiF 4 [42], Nd:YAlO 3 [43][44][45][46][47][48], Nd:LYSO [49], Nd:LaBO 2 MoO 4 [50], Nd:LSB [51]. Dual-wavelength lasers with isotropic active media usually utilize specially designed dichroic output couplers and/or spectrally selective Fabry-Perot etalons.…”

Continuous-wave dual-wavelength operation of a diode-pumped Nd:GdVO4 laser at the 1063 & 1071 nm, 1063 & 1083 nm and 1083 &1086 nm wavelength pairs

“…Dual-wavelength lasers have attracted a strong interest in recent studies due to their application in different areas such as terahertz imaging and spectroscopy [1,2]. Neodymium (Nd)doped solid-state laser crystals, which are well-known for their good spectral and mechanical properties, have proved to be great candidates for development of dual-wavelength lasers [3][4][5][6][7][8][9][10][11][12][13][14][15]. Generally, the standard emission line of the widely used Nd-doped solid-state laser crystals such as Nd:YAG, Nd:YVO 4 and Nd:GdVO 4 belongs to the 4 F 3/2 -4 I 11/2 intermanifold transitions.…”