Dual Wavelength Pumped Mid-IR Laser

Description:

Our technology unlocks a previously under-utilised laser transition in the erbium ion. Using a new technique, we have made the dynamics of this transition competitive and produced significant power from it for the first time.

 

There are currently a few other technologies that provide light in this wavelength band namely GaSb diodes, quantum cascade lasers, hybrid II-IV crystal lasers and difference frequency shifted near IR lasers. GaSb diodes and Quantum cascade lasers are compact but do not have the broadband tunability or the ability to store energy which severely limits their use for generating very short pulses or high peak power operation. Hybrid II-IV crystals provide relatively low power and their hybrid fibre – crystal construction makes them expensive. Difference frequency shifted lasers tend to be complex, bulky, and less suited to airborne systems or inexpensive compact systems for a clinical setting. Our technology has the potential for high peak power and broadband tunability from a simple, relatively inexpensive package that is something that none of the competing technologies offer. A further advantage of our technology is the potential for significant power scaling without significant degradation of beam quality which is essential for remote sensing applications.

 

The graph below from the website of Toptica, which is one of the world leading laser vendors, depicts the currently available range of their laser diodes. We can clearly see that our laser (in yellow on the right) significantly outperforms the commercially available options, while also providing far superior beam quality which is essential for many applications ranging from laser radars to defense countermeasures.

 

 

Patent Information:
For Information, Contact:
Kiara Bechta-Metti
The University of Adelaide
Kiara.Bechta-Metti@adelaide.edu.au
Inventors:
David Ottaway
Ori Henderson-Sapir
Jesper Munch
Keywords: