INNOSLAB lasers are characterized by: short pulse length and high peak power, high pulse
repetition rate, high beam quality and flexibility in beam profile, from circular beam profile, through
line shaped one dimensional Top-hat, to two dimensional top-hat with rectangular or square cross
section. Their tailor able beam profiles open for INNOSLAB laser a variety of applications with high
energy efficiency, such as glass milling, parallel scribing, high throughput ablation, particle imaging
velocimetry and pumping of dye lasers.
Through an optimal combination of crystal shape, cooling and resonator design, InnoSlab lasers
possess unified advantageous features of short pulse duration and high peak output power, high
pulse repetition rate, high beam quality and high flexibility in beam profile, from circular beam
profile, through line shaped one dimensional Top-hat, to two dimensional Top-hat with rectangular
cross section. We report diode end pumped, electrooptically q-switched Nd:YLF, Nd:YAG and
Nd:YVO<sub>4</sub> slab laser and their efficient harmonic generation in near field. Using oscillator/amplifier
with Nd:YAG slabs over 50mJ pulse energy at 6kHz was obtained. The pulse length is 7ns and the
peak power is as high as 7MW. With Nd:YVO<sub>4</sub> slabs 400W average power at 50kHz was obtained.
The pulse length is as short as 8ns. Because of the high peak power over 300W second harmonic
is achieved by two LBO crystals.
We reported all-solid-state double Nd:YLF and Nd:YAG slab laser and their efficient frequency
doubling in near field. With two Nd:YLF slabs fundamental laser pulse energy of 24 mJ and 15mJ
pulse energy at 523 nm were obtained at a 1.0 kHz repetition rate. The pulse length at 1047nm and
523 nm was 7.1ns and 5.5 ns. The peak power is around 3MW. The corresponding conversion
efficiency was 62.3%. With two Nd:YAG slabs average q-switched fundamental output of 169 W at 10
KHz was obtained. 93 W of second harmonic at 10 KHz with a pulse width of 10.7 ns was achieved.
The efficiency of SHG was up to 57%.