On January 16, 2025, Mars will be visible in Singapore’s night sky, due to planetary opposition, bringing Earth, Mars, and the Sun into a straight line for a spectacular view. Owing to this alignment, ...

Abstract: We present a compact and efficient method for directly coupling a near-ultraviolet laser diode with high beam ellipticity to a hollow core fiber (HCF) using an all-fiber mode field diameter ...

Abstract: We present a compact and efficient method for directly coupling a near-ultraviolet laser diode with high beam ellipticity to a hollow core fiber (HCF) using an all-fiber mode field diameter ...

Quantum entanglements between integer-order and fractional-order orbital angular momentums (OAMs) have been previously discussed. However, the entangled nature of arbitrary rational-order OAM has ...