Publications using lightsource.tech light sources

In this paper, the LS‑WL1 is used as a high‑brightness, laser‑pumped white light source critical for achieving nanometer‑scale resolution in dynamic full‑field optical coherence microscopy (d‑FF‑OCM). Its intense, incoherent output allows uniform pupil illumination of high‑NA (1.25) objectives and enables deep tissue imaging (~100 µm) without speckle artefacts – something standard LEDs or lasers cannot provide.

The LS‑WL1 is used as a high-brightness white light source for focus variation microscopy. It provides stable illumination that ensures accurate surface measurements even under vibration. Its spectral quality and power output support high-NA objectives, enabling precise 3D metrology.

Instead of physically moving the objective lens to different focus depths, a dispersive (chromatically aberrated) objective lens whose focal plane shifts depending on the wavelength of light is used to produce a z-stack of images. The white light source LS-WL1 covering 486–656 nm is combined with an acousto-optic tunable filter (AOTF) to generate narrowband, selectable wavelengths. By sweeping through these wavelengths, the system creates an image stack where each image is focused at a different depth – enabling 3D surface reconstruction without any mechanical motion.

The LS-WL1 is used as a high-brightness point light source in a Schlieren imaging system to visualize shock structures in a transonic wind tunnel. Its small étendue and high luminance allow for collimated, high-contrast illumination across long optical paths, which is essential for resolving fine wave patterns near porous blades. The authors chose the LS-WL1 specifically to overcome limitations of traditional light sources in capturing low-density gradients and secondary wave features.

The LS-WL1 is used in this paper as the illumination source in a prototype RGB-D imaging system that relies on learned off-aperture light encoding. Its high brightness and low étendue ensure spatially confined, consistent illumination necessary for precise depth encoding across a wide field of view. This enables the system to project structured light patterns with high fidelity, which are critical for training and evaluating the depth reconstruction algorithm.

The Monochromator-F is used in the measurement setup for analyzing the joint spectral intensity (JSI) of the entangled photon pairs. It is employed to spectrally resolve the signal and idler photons of the pairs, which is critical for determining their entanglement properties. Two Monochromator-F units equipped with 1200 lines/mm gratings blazed at 750 nm are used in coincidence to scan through wavelength combinations and build the JSI map. This spectral characterization enables calculation of the entanglement time (here, ~409 fs), which is crucial for evaluating the photon source’s suitability for entangled two-photon absorption (eTPA) imaging applications

The Hyperchromator is used to create a tunable, narrow-band, incoherent illumination that improves image quality in quantitative phase imaging of live cells by minimizing speckle and fringes while retaining interferometric capability.

The Hyperchromator is used as a tunable excitation light source for absorption spectroscopy. The Hyperchromator provides adjustable‑bandwidth illumination (5–25 nm) over 220–1600 nm and is fiber‑coupled through a reflective collimator to shine at a 20° incident angle on the gemstone. This narrowband, stable illumination enables systematic study of how specific excitation wavelengths and temperatures affect the gem’s absorption and color, while any luminescence interference is reduced with appropriate optical filtering.

The paper presents a goniometer for capturing spectral and angular-resolved data from scattering and absorbing media. Illumination is provided by the Hyperchromator, yielding narrow-band, temporally stable light over 190–2500 nm. The Hyperchromator output is fiber-coupled, passed through a motorized filter wheel for dark-frame subtraction and intensity control, and imaged onto the sample to enable wavelength-resolved, angle-resolved measurements while the illumination geometry remains fixed (they operate practically in 400–1100 nm due to other optics).

The Hyperchromator II (Mountain Photonics) acts as a tunable, narrowband illumination for an integrating-sphere setup. The authors scan 320–1000 nm with ~7 nm FWHM to record, at each excitation wavelength, hemispherical reflectance and transmittance along with the sample’s photoluminescence. Using this monochromatic, stable illumination allows them to separate elastic scattering from luminescence and, via a Monte-Carlo lookup-table inversion, retrieve accurate absorption and scattering coefficients of photoluminescent turbid media.

The paper uses a Hyperchromator  as a tunable excitation source to select wavelengths (~210–1000 nm) that are fiber-delivered into an integrating-sphere absorption setup. The authors scan UV–visible bands (reported spectra 250–600 nm, ~25 nm FWHM) to measure how specific excitation wavelengths induce and fade the photochromic orange center while recording absorption spectra. This controlled, narrowband illumination lets them identify ~255 nm as most effective for excitation and ~450 nm for rapid fading, enabling a fast screening protocol.