In this paper we experimentally demonstrate a simple laser cavity that produces spatial tuneable laser modes from a Gaussian beam to a Flat-top beam and a Donut-beam. The laser cavity contains an opaque ring and an adjustable circular aperture that could be varied and thus allows for tuneability of the cavity without it being realigned. A digital laser with an intra-cavity spatial light modulator is used to demonstrate and confirm the predicated properties of the resonator.
Reference:
Ngcobo, S, Ait-Ameur, K, Litvin, I, Hasnaoui, A and Forbes, A. 2014. Tuneable Gaussian to flat-top resonator by amplitude beam shaping using a digital laser. In: Proceedings of SPIE, Laser Resonators, Microresonators, and Beam Control XVI, San Francisco, California, United States, 1 February 2014
Ngcobo, S., Ait-Ameur, K., Litvin, I., Hasnaoui, A., & Forbes, A. (2014). Tuneable Gaussian to flat-top resonator by amplitude beam shaping using a digital laser. SPIE Proceedings. http://hdl.handle.net/10204/7579
Ngcobo, Sandile, K Ait-Ameur, I Litvin, A Hasnaoui, and A Forbes. "Tuneable Gaussian to flat-top resonator by amplitude beam shaping using a digital laser." (2014): http://hdl.handle.net/10204/7579
Ngcobo S, Ait-Ameur K, Litvin I, Hasnaoui A, Forbes A, Tuneable Gaussian to flat-top resonator by amplitude beam shaping using a digital laser; SPIE Proceedings; 2014. http://hdl.handle.net/10204/7579 .
ResearchSpace
