Fig. 1. Actively Q-switched Alexandrite laser. (a) Schematic of experimental setup; (b) photograph of experimental setup with photograph of Alexandrite crystal shown in inset

Fig. 2. Experimental results of actively Q-switched Alexandrite laser for wavelength tuning. (a) Output power and pulse duration versus wavelength at 5 kHz and 10 kHz repetition rates; (b) spectrum corresponding to maximum output power at 10 kHz repetition rate

Fig. 3. Experimental results of actively Q-switched Alexandrite laser output at 755 nm. (a) Output power and pulse duration versus absorbed pump power at 10 kHz repetition rate; (b) single pulse energy and peak power versus absorbed pump power at 10 kHz repetition rate; (c) output power and pulse duration versus absorbed pump power at 5 kHz repetition rate; (d) single pulse energy and peak power versus absorbed pump power at 5 kHz repletion rate

Fig. 4. Pulse duration of actively Q-switched Alexandrite laser versus absorbed pump power

Fig. 5. Experimental results of cavity dumping. (a) Output power versus absorbed pump power; (b) pulse shape at maximum output power with corresponding beam shape shown in inset