Laser Pointer Setup
Laser Pointer Setup - Related Videos
14:18
Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
0 Views •
Cited by 4 •
2016
A protocol to detect and automate mode locking in a pre-adjusted nonlinear polarization rotation fiber laser is presented. The detection of a sudden change in the output polarization state when mode locking occurs is used to command the alignment of an intra-cavity polarization controller in order to find mode-locking conditions.
06:40
Laser-guided Neuronal Tracing In Brain Explants
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2015
We describe a technique to label neurons and their processes via anterograde or retrograde tracer injections into brain nuclei using an in vitro preparation. We modified an existing method of in vitro tracer electroporation by taking advantage of fluorescently labeled mouse mutants and basic optical equipment in order to increase labeling accuracy.
09:23
A Low Cost Setup for Behavioral Audiometry in Rodents
0 Views •
Cited by 17 •
2012
A fast and inexpensive method for the behavioral determination of hearing parameters like hearing thresholds, hearing impairments or phantom perceptions (subjective tinnitus) is described. It uses pre-pulse inhibition of the acoustic startle response and can be easily implemented in a personal computer using a programmable AD/DA-converter and a piezo sensor.
07:08
A Mouse Model for Laser-induced Choroidal Neovascularization
0 Views •
Cited by 89 •
2015
Here, we present the mouse laser-induced choroidal neovascularization (CNV) protocol, an experimental model that re-creates the vascular hallmarks of neovascular age-related macular degeneration (AMD). Once mastered, it can reliably and effectively induce CNV as a model system to test various experimental measures.
10:44
Laser Microirradiation to Study In Vivo Cellular Responses to Simple and Complex DNA Damage
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Cited by 16 •
2018
The goal of this protocol is to describe how to use laser microirradiation to induce different types of DNA damage, including relatively simple strand breaks and complex damage, to study DNA damage signaling and repair factor assembly at damage sites in vivo.
FAQs
Mechanical stability is central to reproducible alignment. Securing the pointer in a mount keeps its placement and orientation controlled while the beam path is established, reducing changes caused by handling or unintended movement. In bioengineering experiments, this consistency allows later calibration or optical measurements to use the same visual reference rather than a shifting one.
The pointer’s orientation determines whether the beam follows the intended optical path and reaches the selected target. Adjustment must therefore consider both position and direction, not merely whether the device is switched on. Verifying the beam at the target confirms that the reference is correctly placed for imaging, illumination, or measurement arrangements.
Exposure and reflections are limiting conditions that must be managed while establishing the beam path. The setup should restrict unnecessary exposure and account for reflected light around the target and surrounding surfaces. These precautions help protect users and biological samples while preserving the controlled optical conditions needed for dependable bioengineering work.
A practical sequence is to secure the pointer, adjust its position and orientation, and then verify the beam at the intended target. Operation should occur only after the path appears reproducible and exposure or reflection concerns have been considered. Following the same sequence each time supports consistent calibration and alignment across experiments.
A configured pointer can support several arrangements that depend on a visible, repeatable beam path. Relevant examples include imaging-system calibration, illumination-path alignment, and optical measurement setups. In each case, the beam serves as a reference for positioning or checking the optical arrangement, helping researchers establish conditions that can be reproduced during experimental work.
Careful alignment improves repeatability by giving researchers a dependable reference for placing or checking optical components and targets. It also helps protect samples and users by keeping operation controlled and limiting unnecessary exposure or reflections. Together, these outcomes provide a more stable foundation for observing biological systems or using light within bioengineering experiments.