Dual-wavelength passively mode-locked Nd:LuYSiO_5 laser with SESAM

Abstract

A diode-end-pumped dual-wavelength mode-locked laser based on Nd:LuYSiO5 crystal is demonstrated. With a SESAM, simultaneous mode locking at the 1075.8 nm and 1078.1 nm is achieved and the dual-wavelength mode locked pulses have a pulse width of 8.9 ps. Due to frequency beating, ultrahigh repetition rate ultrafast pulses with 997 fs pulse width and 0.59 THz repetition rate are further formed. Under 12.7 W absorbed pump power 1.7 W mode-locked output power was obtained, the slope efficiency of the mode locked laser was 24.3%.

Orthogonally dual-polarization passively mode-locking operation of Nd:La0.25Gd0.75VO4 crystal

“…The temporal pattern has a separation of about 4.2 ps, which corresponds to the beat frequency between the 1062.1 nm and 1063 nm, and the width of the pattern is about 2.3 ps. The situation of mode locking is similar to that reported by Cong et al for a diode pumped Nd:LYSO laser [27].…”

“…Under action of SESAM, simultaneous mode locking at the wavelengths could also be realized. Like shown in [16,27], we note that the mode locked pulses of the two wavelengths at 1062.1 nm and 1063 nm are synchronized in the cavity, and it is their beating that led to the formation of the fine structures on the measured autocorrelation trace. Here the formation of dual-wavelength mode-locked laser are attributed to the effect of SESAM and the effect of cavity dispersion.…”

Dual-wavelength passive and hybrid mode-locking of 3, 45 and 10 GHz InAs/InP(100) quantum dot lasers

“…In case of Ti:sapphire ML lasers, various techniques are being studied and implemented (see for example [14] and references in [15]) to achieve dual-wavelength mode-mocking. In QD lasers, simultaneous emission from ground state (GS) and excited state (ES) is a well known origin of two color emission [16,17].…”

Diode-pumped Pr3+:LiYF4 visible dual-wavelength laser

“…So far, dual-wavelength laser for different transitions of Nd 3 þ have been reported for some crystals such as Nd:YAG [6][7][8][9][10][11][12][13][14][15][16][17][18], Nd:YVO 4 [19][20][21][22][23][24][25][26], Nd:GdVO 4 [27][28][29][30][31], Nd:LuVO 4 [32,33], Nd:YAlO 3 [34][35][36][37] Nd:GSAG [38], Nd:LSO [39], Nd:LYSO [40,41], Nd:SYSO [42] and Nd:YAB [43]. However, few researches on dual-wavelength Nd 3 þ -doped lasers in the visible spectral region have been reported [44][45][46].…”