Modern science is able to do what it does because it’s quantitative; it relies on measurements and calculations to deliver solid results.
As the laser’s use as a scientific research tool becomes more commonplace, so does the need to include accurate, objective measurements of the laser’s behavior.
Consider, for example, fluorescence microscopy. In applications such as photobleaching or photoactivation, a precisely defined amount of applied power is crucial for repeatability of the experiment. However, power output of light sources changes over time; also, the total energy delivered to a specimen will depend on the optical beam path of the microscope, as well as filter sets and objectives used. This makes comparisons between experiments performed on different microscopes complicated. Using an accurately calibrated power meter in the object plane itself, it is possible to measure the exact amount of light applied to a specimen, regardless of the light source or optical details of the microscope. Such…objective measurements can enable researchers to directly compare results of experiments performed using different optical equipment and setups.
For over 40 years, Ophir has been the partner of choice for anyone needing photonic measurement solutions in scientific applications, both end users as well as instrument manufacturers needing to integrate customized solutions into their system designs. Ophir solutions are in use in such diverse fields as:
- Flow cytometry
- Terahertz imaging
- DNA sequencing
- Fluorescence microscopy
- …as well as a host of the more obvious disciplines such as optical physics, and countless more.
The scientific community is often faced with the requirement of testing, validating, or merely qualifying several laser sources planned for a particular project.. Such testing is needed to: Read more >
I am a fifth year graduate student, working in the Saykally group at the University of California Berkeley. My research focuses on investigating air/water interfaces using second harmonic generation, a surface selective nonlinear optical technique. Read more >
Want to know how and why he profiles his laser systems? Want to find out the trick he uses to make laser alignment a snap? I asked him a few questions about his method and motivation. Read more >
Lasers used in labs must be measured. However, there are usually many constraints, even besides the obvious one (money): Read more >
To begin we would probably specify its color or, more accurately, its spectral distribution. We would also need to describe its spatial distribution, i.e. the intensity versus position in a cross section of the beam. But light, of course, is a vector phenomenon so our characterization would also need to include the direction of the electric and magnetic fields (polarization). Read more >
Whether you're a lab researcher or an industrial worker, there are several parameters you might need to calculate, such as power density or ideal focus spot size. We've recently added a few calculators to our website. I hope these calculators make your work just a little bit easier. We have five laser optics calculators (so far): Read more >