The phrase "a tiny beam of" is correct and usable in written English.
It can be used to describe a small, focused ray of light or metaphorically to indicate a small amount of something, such as hope or inspiration.
Example: "As the sun began to set, a tiny beam of light broke through the clouds, illuminating the landscape."
Alternatives: "a small ray of" or "a faint glimmer of".
The practical business of steering a tiny beam of light around the back of somebody's eye is a complicated affair.
The Times selected our snagger for mention in its weekly "Patents" column, along with a surgical tool that uses a tiny beam of water moving at supersonic speed to cut human eye tissue.
Physicists would chill a tiny beam of semiconductor, which would vibrate like a guitar string, to suck out every possible quantum of energy.
He built each image by exposing one part of the body after another to the tiny beam of the flashlight as the camera lens, poised above the subject's middle, recorded.
The accelerator delivered radiation in a radically different way, emitting tiny beams of radiation from many points on a spiral encircling the patient.
Before "Spoiled" he asked, pointing to the ceiling of the room, "Any chance we can get that disco ball spinning?" Soon enough, it was, showering him with tiny beams of light as he danced.
It comprises all those tiny beams of freedom that liberate us from shadows and the night.
According to UFO chasers like Australia's Peter Slattery, the tiny beams of intense light cause UFOs to "power up," meaning they flash their lights on and off, like a car blinking its headlights at a nearby hitchhiker.
A tiny ladderlike beam of silicon converts light into vibrations and vice versa with extremely high efficiency, physicists report.
The technology can divide beams into a million tiny beams, each of which can be independently controlled by an onboard computer in response to signals from a camera that tracks precipitation, signs, obstacles, and oncoming vehicles.
The National Ignition Facility would consist of 192 individual laser beams converging on a tiny pellet of nuclear fuel to generate fusion energy -- a vastly scaled-down version of one element of a hydrogen bomb.
