Modal decomposition of Laguerre Gaussian beams with different radial orders using optical correlation technique

S Pachava, A Dixit, B Srinivasan - Optics Express, 2019 - opg.optica.org
In this paper, we explore the use of an optical correlation technique to decompose different
radial as well as azimuthal order modes of Laguerre Gaussian (LG) beams. We …

Adaptive modal gain controlling for a high-efficiency cylindrical vector beam fiber laser

WT Fang, RX Tao, YM Zhang, HX Li, PJ Yao, LX Xu - Optics express, 2019 - opg.optica.org
We propose and experimentally demonstrate an ytterbium-doped fiber laser emitting the
single high-order cylindrical vector beams with a high efficiency and a high modal purity …

Flat gain over arbitrary orbital angular momentum modes in Brillouin amplification

H Li, BO Zhao, L Jin, D Wang, W Gao - Photonics Research, 2019 - opg.optica.org
Controlled obtaining of orbital angular momentum (OAM) modes of light at high power over
arbitrary orders has important implications for future classical and quantum systems …

Raman amplification of optical beam carrying orbital angular momentum in a multimode step-index fiber

S Pidishety, S Zhu, Y Feng, B Srinivasan, J Nilsson - Optics Letters, 2019 - opg.optica.org
We experimentally demonstrate 15 dB of Raman amplification of 1115 nm pulses in an
orbital angular momentum mode (OAMM) with charge l=+ 2, S=+ 1 in 5 m of step-index 25 …

Simulations of multiwavelength cladding pumping of high-power fiber Raman amplifiers

N Zhao, S Hong, AV Harish, Y Feng… - Optical …, 2019 - spiedigitallibrary.org
We numerically simulate and optimize a high-power fiber Raman amplifier cladding pumped
by spectrally combined diode lasers at wavelengths from∼ 0.9 to∼ 1 μm in the continuous …