Diode-end-pumped passively Q-switched 1319 nm Nd:YAG ceramic laser with a V3+:YAG saturable absorber

Transparent Ceramics at 50: Progress Made and Further Prospects

“…Temporary controlled reduction of the quality factor Q of a laser system is an efficient method used to build up the energy stocked within the resonator. Rapid restoration of a high Q causes the release of the accumulated energy in short (down to picoseconds), high peak power pulses …”

“…Rapid restoration of a high Q causes the release of the accumulated energy in short (down to picoseconds), high peak power pulses. [72][73][74][75] Transparent ceramic, glass-ceramic or single-crystal disks, with oxide or chalcogenide (II-VI) chemistry, doped with cations such as Cr 4+ (for Nd 3+ or Yb 3+ lasing), V 3+ , or Co 2+ (for lasers working in the 1.2-1.6 lm range, e.g., Er 3+ ) can function as passive Q-switches; Cr 5+ , Cr 4+ , Cr 2+ , or Fe 2+ are also used. All the TM + listed are located in four coordinated sites of T d or are slightly distorted along the "c" axis site of D 2d symmetry.…”

Development of Saturable Absorbers for Laser Passive Q‐Switching near 1.5 μm Based on Transparent Ceramic Co2+:MgAl2O4

“…3 Many types of passive switching materials have been developed, the most popular being based on the transition-metal cations like Cr 4+ , V 3+ , or Co 2+ as the active dopant. [4][5][6][7] For some important infrared lasers in the 1.3-1.7 lm range, especially for those exploiting the 3 I 13/2 ? 4 I 15/2 emission of Er 3+ , passive Co 2+ :Mg(Zn)Al 2 O 4 Q-switches represent an efficient solution.…”

Diode-pumped passively Q-switched Nd:YAG ceramic laser at 1319 nm with Co2+:LaMgAl11O19 crystal as the saturable absorber

“…We have reported a passively Q switched Nd:YAG ceramic laser at 1319 nm with a V 3+ :YAG as the satu rable absorber, the average output power of 1.8 W was obtained at the pumped power of 23.7 W, the mini mum pulse width was 128 ns with the pulse repetition rate of 230 kHz, which was attained with a T = 2.8% output coupler at the pumped power of 23.7 W [14].…”

“…In addition, through frequency conversion technology, the red light of frequency dou bling and the 1.5 µm eye safe light of stimulate Raman scattering (SRS) can be generated [1][2][3][4][5][6][7][8][9][10][11]. It is well known that 1.3 µm wavelength can be obtained by the 4 F 3/2 -4 I 13/2 transition of Nd 3+ doped materials such as Nd:YAG, Nd:YLF, and Nd:YVO 4 [12][13][14][15][16][17]. Nd:YAG crystals have been the most widely used solid state laser mediums due to their excellent optical and mechanical properties.…”