Diode-pumped doubly passively Q-switched Nd:GdVO_4 134μm laser with V^3+:YAG and Co:LMA saturable absorbers

Growth and optical properties of Co,Nd:LaMgAl11O19

“…The Co 2 þ ions absorption was quite weak in the region of 700-1100 nm, so the energy loss caused by the absorption of Co 2 þ can be neglected in the pump band around 800 nm, as well as the emission band of Nd 3 þ ion around 1050 nm. Many experiments and references have demonstrated that the absorption region from 1200 nm to 1600 nm can be used as passive Q-switch for the Nd 3 þ -doped laser crystal [31,32] and the Er 3 þ glass [33,34].…”

Diode-pumped doubly passively Q-switched c-cut Nd:GdVO4 1.34μm laser with V3+:YAG and Co:LMA saturable absorbers

“…At the similar pump power, when the laser intensity in the cavity is not very high, V 3+ :YAG is more easily to be fully saturated, resulting in shorter pulse width. Meanwhile, V 3+ :YAG has longer emission lifetime, so it has longer recoverable time, resulting in lower pulse repetition rate, which has been experimentally demonstrated [17,18].…”

Dual-loss-modulated passively Q-switched Tm:LuAG laser with multi-walled carbon nanotube and monolayer graphene

“…Due to the absence of characteristic descriptions of two SAs at 2 μm in the rate equation model until now, it is difficult to discuss the relevant mechanisms quantitatively and theoretically based on the simulation method at 1.3 μm in Ref. [30]. However, we think that the pulse compression mechanism of graphene and MWCNT at 2 μm is analogous to that in the doubly passively Q-switched laser with V 3+ :YAG and Co:LMA at 1.3 μm [30].…”

“…[30]. However, we think that the pulse compression mechanism of graphene and MWCNT at 2 μm is analogous to that in the doubly passively Q-switched laser with V 3+ :YAG and Co:LMA at 1.3 μm [30]. Even the doubly passively Q-switched laser with graphene and MWCNT has similar nonsaturable losses in comparison with the singly passively Q-switched laser with graphene or MWCNT, the doubly passively Q-switched laser can still compress the pulse width.…”