In addition to common parameters like wavelength, output power and brightness, requirements in defense vary from industrial products. Contrary to industrial applications, where key requirements are total cost of ownership and lifetime measured in operating hours, defense applications use size, weight and power (SWaP) as the key performance metrics. In addition, overall system efficiency is a crucial factor in saving space and weight. Reliability is typically measured in years of service with comparatively low overall laser on time and not in laser operating hours. We present new products based on the Coherent FACTOR series of fiber coupled high power diode laser modules, optimized for defense applications. Modules at 793 nm for Thulium fiber laser pumping and modules at 976 nm for Ytterbium fiber laser pumping are presented. Compared to industrial FACTOR series modules, these devices are optimized for highest output power and low weight compared to their industrial counter parts. Modules are designed, qualified and tested to ensure reliable operation in the demanding environmental conditions of defense applications. Modules at 793 nm ranging from 100 W to 500 W of output power are shown. The FACTOR-16 module is rated at 100 W from a 100 µm 0.22 NA fiber. 500 W are achieved from a T-Bar based packaged equipped with a 200 µm 0.2 NA fiber. At 976 nm, the new lightweight FACTOR-16 package with 150 W from a 100 µm 0.22 NA fiber is shown. In addition, power scaling results from FACTOR-22 and FACTOR-44 modules with power levels of 400 W and 600 W respectively are presented.
Phosphor down-conversion of blue organic light-emitting diodes (OLEDs) is one approach to generate white light, which offers the possibility of easy color tuning, a simple device architecture and color stability over lifetime. In this article previous work on down-conversion devices in the field of organic solid state lighting is briefly reviewed. Further, bottom emitting down-conversion OLEDs are studied from an optical point of view. Therefore the physical processes occurring in the down-conversion layer are translated into a model which is implemented in a ray tracing simulation. By comparing its predictions to experimental results the model is confirmed. For the experiments a blue-emitting polymer OLED (PLED) panel optically coupled to a series of down-conversion layers is used. Based on results obtained from ray tracing simulation some of the implications of the model for the performance of down-conversion OLEDs are discussed. In particular it is analysed how the effective reflectance of the underlying blue OLED and the particle size distribution of the phosphor powder embedded in the matrix of the down-conversion layer influence extraction efficiency.
"Optical Technologies have conquered the world" - their economic key data showed an impressive growth in the past
couple of years, and the predictions for the up-coming years keep the expectations high1, 2. In the case of OLED (Organic
Light Emitting Diode) lighting, e.g. IDTechEx is predicting a worldwide market growth from 50 million USD in 2009 to
3.3 billion USD in 20123.
LED and OLED technology, although both being referred to as solid state lighting, are rather complementary in their
characteristics. Whereas LEDs are high efficient point light sources, OLEDs cover large area, diffuse lighting applications
which can follow the increased awareness for creation of personalized atmosphere. Ambience and mood lighting
can be perfectly realized by the means of OLED large area illumination which will pave the way for applications that up
to now could not have been realized.
OLED lighting technology rests on three pillars at the same time, the basic performance like efficiency and lifetime, the
unique features, and costs. These key challenges and their impact on various applications will be discussed.
Conference Committee Involvement (11)
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXII
29 January 2018 | San Francisco, California, United States
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXI
30 January 2017 | San Francisco, California, United States
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XX
15 February 2016 | San Francisco, California, United States
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIX
10 February 2015 | San Francisco, California, United States
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVIII
4 February 2014 | San Francisco, California, United States
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVII
4 February 2013 | San Francisco, California, United States
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVI
24 January 2012 | San Francisco, California, United States
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XV
25 January 2011 | San Francisco, California, United States
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIV
26 January 2010 | San Francisco, California, United States
LEDs: Materials, Devices, and Applications for Solid State Lighting XIII
27 January 2009 | San Jose, California, United States
Light-Emitting Diodes: Research, Manufacturing, and Applications XII
22 January 2008 | San Jose, California, United States
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.