The phrase "along the light path" is correct and usable in written English.
It can be used in contexts related to optics, physics, or any discussion involving the trajectory of light.
Example: "The experiment was designed to measure the intensity of the beam along the light path."
Alternatives: "through the light path" or "across the light path".
One reason is its sensitivity towards changes in material refractive index along the light path.
Fully irradiated conditions are achievable when all the particles along the light path 'see the photons'.
The results showed that the vertical velocity along the light path was produced in the condition of destabilization, which helps to achieve homogenous mixing of medium needed for microalgae growth.
The beam pair traps the atoms and then the team can change the frequency of one laser slightly to shift the interference pattern along the light path, carrying along the trapped cesium atoms.
Exposure time (10 ms) was electronically controlled using a Uniblitz shutter (Vincent Associates, Rochester, NY) and apertures along the light path confined the diameter of effective uncaging to approximately 50 µm.
Cell thickness along the light path may also change.
The monotonously tapered shape of fabricated SAS gives continuous and smooth increase of refractive index along the incident light path, resulting in very low reflectance <5.5% for 350 1,800 nm range of wavelength.
As starlight passes near the edge of the Sun, according to Einstein, it should travel along that curved space, causing the light-path to appear bent.
If you put an additional mirror (or set of mirrors) along the light's path, they don't change that story; they simply change where that light winds up converging to a point.
The fiber bundle transmits this returning light to the scan lens intermediate image plane where it emerges and continues along the light detection path.
Since the x-rays take different times to travel along each light path, the flare appeared in only one of the quasar's four images.
