@article{andrusyak_beam_2009,
	title = {Beam combining of lasers with high spectral density using volume {Bragg} gratings},
	volume = {282},
	issn = {0030-4018},
	url = {https://www.sciencedirect.com/science/article/pii/S0030401809002375},
	doi = {10.1016/j.optcom.2009.03.019},
	abstract = {Incoherent combining of multiple laser beams with offset wavelengths into a single near-diffraction-limited beam is an effective solution to increasing energy brightness and scaling output power of high-power lasers. Volume Bragg gratings (VBGs) recorded in photo-thermo-refractive (PTR) glass allow spectral beam combining with a remarkably high spectral density of channels. Spectral beam combining (SBC) of five channels within 1–2nm bandwidth around 1064 and 1550nm into a single near-diffraction-limited beam with absolute efficiency 92–94\% is demonstrated. Scaling of this technique to multi-kW power level is discussed.},
	language = {en},
	number = {13},
	urldate = {2021-10-06},
	journal = {Optics Communications},
	author = {Andrusyak, Oleksiy and Smirnov, Vadim and Venus, George and Glebov, Leonid},
	month = jul,
	year = {2009},
	keywords = {Laser beam combining, Photorefractive materials, Volume holographic gratings},
	pages = {2560--2563},
}

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