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Lasers, LEDs White Papers
Colored Glass as a Versatile and Economical Means for Optical Filtering
Colored glass filters find many uses in optical systems including imaging, laser, and industrial equipment. We describe design and fabrication techniques for implementing low cost optical filters which are an excellent choice for production systems. Filter glass remains an economic alternative to thin-film coated filters as they can produced in high volumes with no secondary operations. Calibrated filters can be produced for demanding applications and various material is available such that...
Ball Shaped End Caps
In this paper, general ball shaped end-caps are studied and illustrated. Different ball shaped end-caps were tested and measured for a variety of applications. For example, a 2.2 mm diameter ball shaped end-cap was manufactured on the end of the...
A Short Introduction to Shortwave Infrared (SWIR) Imaging
SWIR imaging significantly extends the possibilities for industrial machine vision applications beyond the visible range. But while broadband light sources are adequate to illuminate some SWIR applications, narrow-band SWIR LEDs now deliver high...
Multi-line Lasers Simplify Biomedical Imaging
The introduction of multi-line lasers to fluorescence instrumentation provides a compact, easy-to-use, and service-free solution for integrating up to four laser wavelengths with reliable, stable performance. In this white paper we explore the...
Laser Power Attenuation
The main topic is a discussion of the need to attenuate a laser beam for better and more accurate control of the output power required by many applications. One cost effective solution is to use small rotation stages that can rotate waveplates or...
DBR vs DFB
The Photodigm family of high-power edge-emitting Distributed Bragg Reflector (DBR) laser diodes is based on Photodigm’s proprietary single epi growth DBR laser architecture. The Photodigm DBR laser architecture consists of an electrically pumped...
VCSEL Measurement Solutions
Vertical Cavity Surface Emitting Lasers (VCSELs) are a type of semiconductor laser diode. Unlike edge emitting laser diodes, VCSELs emit upwards and thus can be easily packaged as emitter arrays containing hundreds of emitters on a single chip. Many...
Tolerance Analysis Tools Take the Guesswork out of a Colorful Illumination Design Problem
Tolerance analysis has largely been out of reach for illumination designers because of the time needed to perform the thousands of simulations required to get a meaningful statistical tolerance result, and because of a lack of built-in tolerance...
Single Frequency Fiber Lasers for Doppler Lidar
This article reviews Doppler lidar, which is widely used to measure the velocity of solid objects, winds, and aerosols. After reading this white paper, you will understand the entangled relationship between range and velocity resolution; and why it...
Measuring Small-Beam MFD: Overcoming the Challenges
Small beams are used in many critical applications, such as such as fiber optic coupling efficiency, defect scanning, optical design, and optical fabrication process control. Yet often, they are not directly profiled because determining the size of...
Remote API
The Remote API is a means of communication between a controller and a laser marking engine using Ethernet or a serial cable. The controller can be a PLC, a PC, or any other device capable of transmitting commands using the protocol described herein....
Linear Stages and Piezo Flexure Mechanisms Engineered to Advance Precision Motion Control
Part I: What Machine Builders want in a Precision Linear Motor Stage: Precision automation engineers have different requirements than their colleagues in the instrumentation sector: robustness, size, dynamics, and 24/7 reliability. Novel linear...
Measuring Aspheres in a 3-D World
This white paper provides a basic practical guide on the benefits of 3-D measurements of aspheres as well as a couple of real-world examples of parts that we have manufactured. This white paper also goes into detail why one may prefer measuring...
X-Ray Toroids
Optical fabrication techniques discussed to produce bent crystal analyzers that conform to toroidal surfaces for hard and soft x-ray applications including x-ray spectroscopy, ultrafast laser excited x-ray sources, imaging, and plasma diagnostics.
Tunable Laser Light Sources Advance Quantum Research
A remarkable number of photonic applications call for continuous-wave (cw) laser light that is widely tunable throughout the visible range of the spectrum. However, this spectral region remains difficult to access with conventional tunable laser...
Joined Fast Together: e-Mobility and Laser Welding in Automotive Production
The future of the automobile is the subject of hot debate. China is the leading market for electric cars and US startups have completely changed the approach for building a car. Wherever the road leads, one thing is sure – the latest automotive...
X-Mode™ DBRs Enable Extended Tuning Range
The Photodigm family of high-power edge-emitting Distributed Bragg Reflector (DBR) laser diodes is based on Photodigm’s proprietary single epi growth DBR laser architecture. The Photodigm DBR laser architecture consists of an electrically pumped...
A Smart Handheld Raman Spectrometer with Cloud Data Platform and AI Deep Learning Algorithm
CloudMinds's XI™ is the world’s first cloud AI based handheld Raman spectrometer with 785nm laser excitation. Being fully integrated with Cloudminds’s Data A1 smartphone, operation of XI™ is fully automated with an intuitive android app suitable for...
Operating Edge-Emitting Pulsed Laser Diodes with Short Pulses
Many applications in Time-of-Flight (ToF) distance measurement require temporally fast optical pulses with rise times in the sub nano-second regime. The application note explores the multiple challenges in generating short pulses with PLDs for...
Diode Lasers Enable Diverse Therapeutic Applications
Diode lasers have become the dominant laser type used in therapeutic applications. This is because these workhorse devices provide lower cost of ownership, a wider choice of output wavelength and power, compact, rugged packaging, and superior...
The Future of Optics: How Optical Product Design will Change the World
New technologies are creating new opportunities in the optomechanical engineering space. Prepare for what lies ahead in optical product design by reading what 13 experts have to say about how optical product design has changed and where it’s going....
Slow Axis Collimators for Laser Diodes
Diode laser technology is advancing at a breathtaking pace as suppliers add new wavelengths and improve output power but still present one big challenge to the system designer: their output is inherently asymmetric. FISBA solves this with their...
Advantages of Optically Pumped Semiconductor Lasers – Invariant Beam Properties
The optically pumped semiconductor laser (OPSL) is a unique patented technology that combines the most desirable attributes of laser diodes, DPSS (Diode Pumped Solid State) and Ion lasers, while eliminating a number of their compromising...
New Approach for High Reliability, Low Loss Splicing between Silica and ZBLAN Fibers
In the past decade, ZBLAN (ZrF4-BaF2-LaF3-NaF) fibers have drawn increasing interest for laser operations at wavelengths where Fused Silica-based (SiO2) fibers do not perform well. One limitation to the expansion of ZBLAN fiber lasers today is the...
White Dwarf and Monaco: A Simple Turnkey Source of <10 fs Pulses
This white paper describes a simple source of ultrashort (<9 femtoseconds) laser pulses: an optical parametric chirped-pulse amplifier (OPCPA) incorporating a high repetition rate ytterbium fiber amplifier – the Coherent Monaco. The integrated...
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May/Jun 2024
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