Photonic Products has launched a new range of 405 nm wavelength stabilized laser diodes from ONDAX for applications which include Raman spectroscopy, flow cytometry, and metrology/interferometry.
The ONDAX 405 nm blue-violet wavelength stabilised laser is a miniature laser in a standard TO 5.6 mm package. The wavelength stabilisation is achieved by optical feedback using the ONDAX Volume Holographic Grating (VHG) PowerLocker which ensures a stable single longitudinal mode operation.
Features include wavelength stability (<0.015 nm/ºC), single longitudinal mode, compact size (standard 5.6 mm TO package), wavelength locked to <±1 nm, coherence length (~0.6 m) and it is hermetically sealed. The power locked laser has a very low temperature dependence and precise centre wavelength over the locked region which enhances its performance.
The ONDAX range of 405 nm blue-violet wavelength stabilized lasers is also suited for use in data storage, embossed holograms, CD mastering, diffraction grating fabrication, confocal microscopy, particle counting, fluorescence, non-destructive testing, microlithography, and high speed printing.
All ONDAX wavelength stabilised laser diodes are low cost, hermetically sealed, miniature lasers in a standard TO package.
ONDAX lasers are available from Photonic Products in standard wavelengths of 403, 405, 407, 640, 658, 685, and 785 nm. They offer low temperature dependence (<0.03 nm/ºC), single mode narrow linewidth, compact size (5.6 mm and 9 mm standard TO package), and are wavelength locked to <±1 nm.
http://www.rdmag.com/Tools-And-Technology/2009/09/405-NM-Wavelength-Stabilized-Laser-Diodes/
Using a model for the quasi-three level laser dealing with gaussian waves, taking into account the saturation of the pump, the stimulated emission at the pump wavelength, the variation of the pump and laser waists along propagation (important for laser diode pumping) and the variation of the laser intensity along propagation, we evaluate the more promising Yb3+-doped crystals for laser applications: YAG, LNB, GdCOB, YCOB, YAB, C-FAP, S-FAP, KGdW, KYW, Sc2O3, Y2O3, Lu2O3. Our evaluation differs from Deloach et al. (IEEE J. Quant. Electron. 1993;29:1179). KYW, KGdW, YAB and Sc2O3 are found to be the most efficient when considering the laser extracted power and the slope efficiency.
crystal was grown by the Czochralski method. The absorption and fluorescence spectra of the crystal were measured at room temperature. The thermal expansion and the specific heat of the crystal were also measured. Laser outputs at 1.06 and 1.34 μm were achieved when a Nd:GdVO4 crystal sample with a high Nd doping concentration was pumped by a low-power laser diode (LD) at 808.5 nm, and visible green and red laser outputs of intracavity frequency doubling at 0.53 and 0.67 μm were also achieved when nonlinear KTiOPO4 and LiB3O5 crystal, respectively, were used.
http://www.opticsinfobase.org/abstract.cfm?URI=josab-19-1-18
A brief review of the development of laser crystal physics is given, and spectral and laser characteristics of activated crystals are discussed. The operating schemes and types of lasers based on activated crystals and Stark level structure and optical transition intensities of activation ions in laser crystals are discussed in detail. An extensive table lists the properties of activated laser crystals. The luminescence and stimulated-emission properties of laser crystals in the Y/sub 2/O/sub 3/-Al/sub 2/O/sub 3/ system are studied, and self-activated laser crystls are discussed. A comprehensive table of the stimulated-emission wavelengths of lasers based on activated crystals is presented and discussed. Prospects for the development of laser-crystal physics are considered.
http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=5550698
In the ancient times of Atlantis, all learning, all technology, was based upon the use of crystalline structure. What we consider to be metaphysics, they considered to be physics. They derived the purity of science from the purity of crystals. These magnificent crystals can take us back in time to the lost land of Atlantis. With these crystals, Atlantis can be found. They embody the spirit of Atlantis, the culture of Atlantis, and the spirituality that was Atlantis. Each and every one of these crystals was part of the greater whole that embodied the culture of Atlantis.
Implanted Crystals These are crystals brought from Atlantis and physically implanted into the earth at various locations, usually upon power nodes. During the age of Atlantis (especially in the latter days of is existence) most of these crystals were transported to other sacred areas. The crystals contained the original star codes which Atlantis was holding for the planet.
Transference Crystals Crystals still within the veins of the earth. They have had the light codes of Atlantis transferred into them by the Earth Guardians of Atlantis. All of these Atlantean programs are encoded within crystalline matrices of mineral deposits in the earth which Thoth calls “Merlin?s Mine.” The “Merlin?s Mine” crystal deposits contain Light program encodings for various “programs” in stratum or energy layers of the planet, one of which is Atlantean.
Interfaced Crystals These are “ordinary” crystals which have been reprogrammed to interface with the Atlantean stratum of the Merlin Mine (or other stratum of that matrix). These “star codes” are the original star programs contained in the earth?s field from its creation out of “stardust.” While the planet holds this cosmic stuff at its center, so humanity formulates the “codes” of creation from it…for they are the “Elohim” of the next planetary cycle. The Atlanteans as a culture, held these codes in a specific balance for the planet. When their end was near, became their intention was to pass them into the next cycle through various means?one of which was through the crystals.
Laser crystals are a type of long, thin crystal. They often resemble a wand and have 3-sided points or a rounded point that looks something like a finger. They are often very foggy or battered in appearance, so don’t expect to find any perfectly clear crystals. Laser crystal wands are used in alternative healing, as well as in pagan and Wiccan rituals. Proponents say that laser crystal wands can be used to direct the flow of energy in a precise way, almost like a surgical instrument. It can also be used in a more meditative capacity to “cut away” negative thoughts and attachments.
Hold the crystal laser wand in either hand. Look at it intently, turning the wand slowly.
Place the wand over your heart. Contemplate your life as an unfolding narrative. Remember all the negative things you have cut out of your life in your past.
Realize that your focused thoughts, like the focused energy of a laser crystal, can cut through any mental and emotional barriers to your own happiness.
Move the crystal up and down in the area that is storing the negative energy. Emotional attachments are often stored in the heart and solar plexus. Mental attachments are often stored in the third eye, which is in the center of the forehead.
Repeat this meditative process regularly until the negative energy is released.
