|Newsflash – August – 2018|
August 2018 update
With the summer holidays behind us, we are looking forward to the last couple of months of 2018.
With this newsflash we want to inform you on highlights, product introductions and other photonics news.
Lasers for biophotonic research
Our partner Photonics Industries (PI) offers Tu Series TEM00 tunable Ti:Sapphire laser. Its pulse width is perfectly matched to the lifetime of many fluorophores (i.e., ~10ns). With its Broad Tuning Range of ~700 to 900nm, its up to fourth harmonics and frequency mixing (193-206nm), high pulse repetition rate up to 10KHz and high average power of >1W, this makes the Tu laser a valuable tool for cell visualization and other novel biomed imaging applications. Other applications are:
The novel intracavity OPO Series ns lasers can provide mJs of pulse energy pulsed at kHz rep rates at any fixed wavelength selectable from the following wavelength ranges:
All with a TEM00 spatial mode profile. Such lasers are applicable to medical techniques such as:
Blue Light Hazard – How Dangerous is LED Illumination?
Modern Solid State Lighting (SSL) technology has found its way into our normal working and living environments. In the early phases, consumers were most concerned with lifetime, pricing and light quality of the new LED-based light sources. Now they have become almost ubiquitous, a focus has been placed on safety. At the recent Light+Building exhibition topics such as photobiological safety and blue light hazard (BLH) were highly ranked among both visitors and exhibitors.
Photobiological safety is nothing exclusive to SSL sources, but must be evaluated for all light sources. Due to their similarity to laser diodes, LEDs were originally covered by the laser safety standard IEC 60825, which often led to an overestimation of the risks. Since 2009 LEDs and SSL sources have therefore been subject to IEC 62471 “Photobiological safety of lamps and lamp systems”. All lamp and luminaires brought onto the market must be classified according to this standard.
The standard identifies two health hazards that can be caused by visible light. Intense light may lead to retinal burns, a hazard that is easily avoided by normal aversive behavior. However, blue light between 400 nm and 500 nm may cause photochemical damage to the retina, a hazard that is difficult to assess by users. This so-called blue light hazard may lead to degeneration of the macula. The corresponding weighting function ranges from 300 nm to 700 nm with a maximum of 437 nm. In view of the distinctive blue peak of white LEDs, the question arises as to whether SSL sources are hazardous….
Read the full story on our BLOG
Laser beam expanders and F-Theta lenses
Beam expanders increase or decrease the diameter of a laser beam, allowing various elements of an optical system to be calibrated to one another. Beam expanders are primarily used in laser material processing. All beam expanders can be integrated with F-theta objective lenses from Jenoptik in a wide range of beam guidance systems.
The 1x-4x and 2x-10x beam expanders are available for laser wavelengths of 355, 532 and 1030 to 1080 nanometers. The extended zoom range enables a maximum tenfold beam expansion to be achieved. All versions are infinitely adjustable from a minimum to a maximum expansion factor. Expansion and divergence are adjusted separately. This means the beam expanders allow a focus correction of the entire optical system.
The beam expanders come in a highly robust design and a compact housing. There is no rotation of lens elements even during a setup modification. This results in an exceptionally high level of beam stability. The beam expanders are also diffraction-limited: The diameter of the laser beam is limited only by the diffraction of the light. A zoom and focus gauge is engraved on the beam expander, so any manual adjustments can be made quickly and easily.
The BEX 1x-4x steadfast is characterized by a new mechanical design: The moving optical elements are guided linearly. This reduces the influence of mechanical manufacturing tolerances and increases the beam direction stability when changing the magnification and / or divergence. The beam expander achieves a high radiation direction stability of less than one milliradiant.
The newly designed Beam Expander can also be used to lock the setting. This minimizes influences such as vibrations or accelerations on the system. In addition, the BEX 1x-4x steadfast is easy and safe to handle, which reduces set-up times to a minimum.
JENar™ F-theta objective lenses are particularly well suited for use in micromachining laser applications. You can use standard F-theta lenses at laser wavelengths of 1080 to 355 nanometers.
The conventional F-theta objective lenses from Jenoptik offer exceptional durability and enable you to perform high-precision laser material processing. You can use them for the micro structuring, marking and labeling of a wide range of materials. The F-theta lenses come with protective glass. As a special service, we are able to offer you our STEP files, which allow you to integrate the JENar™ F-theta objective lenses quickly and easily into any system.
Each objective lens undergoes a standardized application testing procedure. This enables us to achieve highly consistent optical properties throughout series production. You will benefit as the F-Theta lenses are easy to change and the life-cycle stability is increased.
For more info on these beam expanders and / or F-Theta lenses please contact Danny or Roland
New CAS140D model
Instrument systems launched a new model in their succesfull CAS140D Spectrometer range, the 157 model complies to CIE 360-830 nm range.
More info can be found on our website and you can download the brochure here
Based on the highly successful Laser-Driven Light Source (LDLS)
Researchers using light for imaging and analytical spectroscopy in a variety of applications in the life sciences and materials sciences need light sources capable of providing extreme high brightness and power across a broad wavelength range.
Features & Benefits
Meet us at – Agenda
You can meet us at the following events:
We look forward to supplying you with all the material and information you need and answering any question.
Te Lintelo Systems BV – Mercurion 28 A – 6903 PZ Zevenaar – The Netherlands