Research and experimental development of the multi-wavelength emission solid Raman laser model pumped outside the resonance chamber.

- Develop the theory for a multi-wavelength emission solid-solid Raman laser model that is pumped out of a resonator chamber.

- Optimizes the emission efficiency of Stocke emissions to obtain pulse energy from a few milli-june to several tens of milli-june.

- Mastering the technology of manufacturing a multi-wavelength emission solid Raman laser pumped outside the resonance chamber in Vietnam

- Successfully developed a fully solid Raman laser system using Triple (NO3)2 crystal pumped by quadratic mixing of Nd:YAG laser: The power of the 3rd Stoke laser obtained 55 mW (`5.5 mJ) corresponding to the laser conversion efficiency 26 %, the obtained emission spectrum includes 1st order (563 nm), 2nd order (598 nm), 3rd order (638 nm), 4th order (685 nm) emission.
- With the above results, the successful development of a completely solid Raman laser system with different solid crystal media is feasible under the laboratory conditions in Vietnam. The successful development of this Raman laser system opens up possibilities for applications in scientific research, in industry, biomedical and many other fields of life.
- The implementation of the topic not only brings scientific and training meaning but also makes sense in developing and promoting international scientific cooperation of two institutes on laser technology in general and Raman laser in particular.

The successful research and development of the Raman laser system will open up new research directions as well as new applications in laser technology. The implementation of the topic not only brings scientific and training meaning but also makes sense in the development and promotion of international scientific cooperation of the two institutes on applied laser photonics.

- Scientific papers in referred journals (list):
1.    S. Voitikov, R. Chulkov, V. Markevich, V. Orlovich, Do Quoc Khanh, Nguyen Xuan Tu and Pham Hong Minh, “Raman laser with a singly resonant cavity: theoretical model and experiment”., Communications in Physics, 28, (2018), pp. 287-300.
2.    Orlovich V. A, Chulkov R. V, Dashkevich V. I, Voitikov S.V, Nguyen Dai Hung, Do Quoc Khanh, Minh P. H, Tu N. X., “Multifrequency all solid-state pulsed laser - nonlinear optical system generating on 21 separate lines in UV, visible, and near ir spectral regions” Advances in Optics Photonics Spectroscopy and Applications X, pp. 9-10.
3.    S.V. Voitikov, D. Q. Khanh, N. Dai. Hung and V. A. Orlovich, “Model of Diode-pumped raman laser with the excited state absorptjion of radiation at the fundamental wavelength”, Advances in Optics, Photonics, Spectrscopy & Applications IX, pp. 314-317.
4.    Do Quoc Khanh, Nguyen Minh Hoa, Pham Hong Minh, Vu Thi Bich, S. Voitikov, A.S. Grabtchikov and V. Orlovich, “Development of an all solid-state Ba (NO3)2 Raman laser pumped by the Nd: YAG second hamonics” The 10th International Conference on Photonics and Apllications, November 11-15, 2018, Halong City.

- Education: 03 Master Student graduated.

The project has completed the registered content, we are looking forward to the support from Institute of Physics; Vietnam Academy of Science and Technology as well as grants to continue new research in this direction.