1. TopGaN Ltd., ul. Sokolowska 29/37, 01-142 Warsaw, Poland
2. TopGaN Ltd., ul. Sokolowska 29/37, 01-142 Warsaw, PolandbInstitute of High Pressure Physics PAS, ul. Sokolowska 29/37, 01-142 Warsaw, Poland
3. Institute of High Pressure Physics PAS, ul. Sokolowska 29/37, 01-142 Warsaw, Poland
4. Ammono S.A., Czerwonego Krzyza 2/31, 00-377 Warsaw, Poland
5. BAE Systems Advanced Technology Center, FPC 267, PO Box 5, Bristol, BS34 7QW, United Kingdom
6. University of Glasgow, School of Engineering, Glasgow G12 8LT, United Kingdom