Ultrafast laser spectroscopyapplications

JC Video is pleased to announce we have discovered the most advanced lighting solution- ever.  We have found a lighting solution that is effective, comfortable, and affordable. After more than 15 years of research and testing, we have discovered new technology in lighting that we are finally able to bring to the golf industry.

Depending on how many bulbs you order, you can comfortably shoot at shutter speeds well over 1/2000. (Which is what we consider the minimum for our studio builds.) A good studio will have 3 sets of 4 light fixtures to ensure right, left, and target line cameras have the light needed to capture at maximum shutter speed. This set up will generate crystal-clear replay without motion blur.

Ultrafast laser spectroscopypdf

Ultrafast Spectroscopyapplication

Finally an LED lighting solution that does not generate heat… the only solution for other companies has been to push low power LED’s or Tungsten fixtures that are either not sufficient or way too hot. This is a thing of the past. Now, the whole room can actually maintain cool temperatures without sacrificing video quality.

Our new lighting system allows you to use your projector without washing out the image- even if you position the lights directly in front of the projector. Amazingly, the LED format is not seen by the projector lamp, allowing you to focus the lights directly on the subject and not interfere with the projection display. With the lights focused directly on the player, there is no brightening of the screen- meaning they are totally compatible with any projector.

Light is key to successful teaching - without enough light to film, swing videos end up blurred and dim. With our newest addition to the JC Video suite of tools, that will be a thing of the past. We are excited to solve the problems that teachers face throughout their lessons, and we now can provide video lighting solutions that utilize the capability of our high-speed cameras! We can't wait for you to get yours!

Femtosecond laser spectroscopic techniques (1 fs = 10-15 s, or a millionth of a billionth of a second) allow us to study ultrafast physical phenomena. Since femtosecond laser pulses are short compared to the time scales of atomic-scale motions in molecules and solids and of carrier processes in electronic materials, femtosecond techniques can directly time-resolve these processes. Applications of these methods in the Dexheimer laboratory have included fundamental studies of quasiparticle dynamics in molecular-based electronic materials and studies of photo-carrier processes that have a direct impact on the efficiency of solar cell materials.  Current NSF-funded work includes studies of exciton and polaron dynamics in structurally tunable charge density wave materials, focusing on the relationship between the nature of the electron-phonon interactions and the formation and evolution of localized electronic excitations. REU students, working with graduate students and the faculty mentor, will investigate branching between exciton and polaron formation, a process that is crucial to understand for the development and optimization of molecular electronic materials.  Students will have the opportunity to receive training in optical instrumentation and techniques, signal processing electronics, computer interfacing and data acquisition, data reduction and numerical analysis techniques, and research methodology in the course of their research activities.

Ultrafast laser spectroscopywikipedia

For years, indoor teaching professionals have struggled to get the bare minimum out of their video. While T5 lights have been our go-to solution for quite some time, these lights did not allow us to focus the light on a small enough area- meaning they were not an option for anyone with a simulator or projection screen. Other lights like the old halogen are hot to work under, expensive to replace, and expensive to run. Even though our new lights are LED they do not flicker or pulse with the electrical 60Hz. These lights are incredibly bright but they generate very little heat, and the fact that the light is focused enough to leave all of the necessary projection screens displaying at full quality means these new lights are an absolute game changer.

Ultrafast laser spectroscopyprinciple

[1] EXAFS Spectroscopy of Fractional Mixed-Valence Charge Density Wave Systems, N.A. Turner, S. S. Kim, J.A. Brozik, M.A. Marcus, S.C. Fakra, and S.L. Dexheimer, J. Phys. Chem. C 123, 6182-6189 (2019)

High-speed cameras capture up to 220 frames per second in full HD. Every indoor studio has a need for capable lighting- unfortunately, until now camera capability has far outmatched lighting capacity. Each bulb on these lights generates 12,000 Lumens. For people familiar with lighting it is well known that Lumens in LED format and Lumens from incandescent lighting are just not the same to the camera imaging sensor. Due to the short wave length of the LED light, the camera sensor has a hard time seeing that light source and typically requires 3X the lumens from an LED compared with lighting fixtures that generate heat. This is why the ultra-high Lumens are necessary for video playback.

Ultrafast spectroscopypdf

The major reason lights flicker in video playback is due to the wavelength of the light compared to the camera shutter speed, more light does not equal flicker-free video if you are still using the wrong lights. You can now enjoy flicker-free video playback with the latest and greatest lights. The video capture can be set to 200 fps and during the slow motion replay the 'constant voltage power supplies' generate a pure, flicker-free light for super clean replay.

Prof. Dexheimer has a long record of mentoring undergraduate researchers, including students from groups traditionally underrepresented in STEM fields, and has provided students with research opportunities that have contributed to their interest in pursuing scientific careers and have enhanced their applications for graduate school admission.  Most recently, she has mentored Elizabeth Wells, a promising sophomore physics major who is carrying out modeling of photoexcitation dynamics in charge density wave materials, and Sarah Kim, who carried out modeling of X-ray spectroscopy of these materials [1] as an undergraduate in bioengineering, and who received an award for this work in a university-wide competition.  Prof. Dexheimer was awarded the WSU College of Arts and Sciences Thomas E. Lutz Teaching Award (one awarded annually) in 2015, in recognition of her work in integration of research and education and her work in increasing participation of underrepresented groups, including her work in the WSU Physics and Astronomy Department, the WSU NSF ADVANCE program, and her contributions to the APS Conference for Undergraduate Women in Physics.