Photonics Medical Application Notes

11. UV Measurement Of Sunglasses Using A Back-Thinned CCD Spectrometer 1/22/2013

    In assisting thousands of customers over the years, we’ve discovered that everyone has a slightly different idea of what constitutes ultraviolet light. For some, it’s the light just beyond human vision that some animals can see (300-400 nm). For others, it’s ionizing radiation that propagates only in a vacuum, below 120 nm.  What we can all agree on, however, is that UV light is not good for our eyes, and that a proper pair of sunglasses needs to block these harmful rays.

12. Pre-, Intra-, And Postoperative Use Of Dynamic Infrared Thermography (DIRT) Provides Valuable Information On Skin Perfusion In Perforator Flaps Used In Reconstructive Surgery 2/17/2012

    A study of dynamic infrared thermography (DIRT) in all three phases of perforator flap surgery.

13. Application Note: Scintillator Readout With SPM 8/18/2008
    A large number of radiation detection applications utilize scintillation crystals to convert gammaor X-rays into a burst of optical photons that can then be measured with a suitable photodetector. Depending on the scintillator type and the application, the photodetector could be a PMT, PIN diode or an APD. The SPM is considered to be a viable alternative to these options, giving performance comparable with a PMT in the small, rugged, low voltage format of a PIN or APD.
14. Using Raman Spectroscopy To Detect Malignant Changes In Tissues 5/25/2012

    Accurate, rapid, and non-invasive detection and diagnosis of malignant disease in tissues is an important goal of biomedical research. Optical methods, such as diffuse reflectance, fluorescence spectroscopy, and Raman spectroscopy, have all been investigated as ways to attain this goal. Diffuse reflectance utilizes the absorption and scattering properties of tissues, particularly from cell nuclei and stroma.

15. Application Note: BrightLock® Ultra-G® Optimized Green Laser Performance 2/10/2011
    The BrightLock® Ultra-G® is a breakthrough laser platform based on proprietary BrightLock® semiconductor chip technology.
16. Application Note: Nonlinear Microscopy 9/16/2008
    Ultrafast lasers have revolutionized the field of microscopy by enabling new types of nonlinear microscopy techniques. Femtosecond pulse lasers provide the combination of high peak power (1-100 kW) and low average power (10-1000mW) which is ideal for utilizing nonlinear optical processes in scanning laser microscopy (LSM). Here, we describe the two main varieties of nonlinear microscopy: two-photon microscopy, and third-harmonic generation (THG) microscopy. And we show images using these techniques with various types of modelocked fiber lasers. By IMRA America, Inc.
17. Application Note: High-Speed Spectroscopy 9/15/2008
    Optical spectroscopy is an almost universal technique for monitoring substances or processes. There are many varieties of spectroscopic techniques for various applications. Some of these applications (combustion research, for example) require very quick measurement times, especially if the process of interest is very fast. By IMRA America, Inc.
18. Technical Note: Nanoparticle Generation With Femtosecond Pulsed Laser Deposition 9/16/2008
    Deposition technology is used in the semiconductor and flat panel display industries, along with being used for MEMS, nanotechnology, and optics. Pulsed laser deposition (PLD) with ultrashort pulses has been demonstrated using various ultrafast lasers. In this note, generation and deposition of uniform nanoparticles via femtosecond laser ablation will be described. By IMRA America, Inc.
19. The Evaluation Of Increase And Distribution Of Temperature During The Dental Drilling Using A Thermal Imaging Camera 2/17/2012

    This paper discusses the use of infrared technology to study the optimal method for post space preparation of teeth including how long to drill, the type and size of dental drill used, and the type of cooling used.

20. Measuring The Opacity Of Plastic Tubing With VIS-NIR Transmission Spectroscopy 1/22/2013

    Plastic tubing is available in a variety of opacities ranging from clear to translucent. The transparency of plastic tubing is varied for a number of reasons including providing contrast for visual monitoring of fluid flow, decreasing exposure to ambient light and making the tubing more distinct for machine vision technology. In this application note, VIS-NIR transmission spectroscopy is used to assess the amount of frosting applied to plastic tubing to determine if the tubing meets the required opacity level.