Thank you for your answer, Zahra. It will be helpful for me to design and build the laser. Many thanks.

Best,

Zhiqiang

What are you looking for in terms of repetition rate, laser bandwidth, or pulse duration? A Ti:sapph-based MOPA (Master Oscillator and Power Amplifier) configuration can get you to 20 mJ @ 760 nm, but the system may be more or less complicated if you have additional requirements that you haven't specified.

It seems you need an Er:Glass maybe an Er:YAG laser in fundamental wavelength and in SHG. But in order to understand your requirements we would need a bit more:

What is the required beam quality?

What is the required repetition rate?

What is the required pulse length?

Herbie Smith Thank you, Herbie. Yes, the Ti:Sapphire laser could be an option. Unfortunately, my goals are to build a portable 760 nm nanosecond laser, which will be put in a shoe-box-size cavity. The biggest challenge would be the size. We can make a compromise on the repetition rate. Tens of hertz could be enough. Anyway, Thanks again for giving the suggestion.

Best,

Zhiqiang

Karsten Schuhmann The beam quality is not so important. It could be more larger than 1.0. That's no problem. The only concern is the volume of the laser system, as we aim to put it in a shoe-box-size box. The controller and power supply would be also intergrated into that box.

Repetition rate is in the range from several hertz to tens of hertz and the pusle duration should be less than 100 nanosecond.

I have no idea about Er:Glass lasers. Do you have some advices? I will appreciate it.