Microchip lasers have been around since 1989 when they were first produced at MIT’s Lincoln Labs, but it wasn’t until recently that they have become commonplace in the commercial laser market. As such, they are still somewhat misunderstood. In this blog, we are going to take some time and explain their functionality and why they are so uniquely suited as compact pulsed laser sources at a wide variety of laser wa… Read More
Laser-induced breakdown spectroscopy (LIBS) is one of the most popular laser based atomic spectroscopy techniques on the market today. Nowadays, LIBS is rapidly becoming an indispensable tool for elemental analysis and is generally viewed as a complementary technique to other elemental methods such as mass spectrometry. LIBS has been deployed in a wide range of industrial and scientific applications including on the surface of Mars, where over 200,000 LIBS spectra have been collected aboard of the Mars Science Laboratory Rover … Read More
Flow cytometry is a method for simultaneously analyzing multiple physical properties of an individual cell as it flows through a beam of light in a fluid stream, including the cells size and fluorescence. In practice, flow cytometry is essentially a combination of particle counting and fluorescence spectroscopy. Since we have written about both of these subjects in depth in the past, this blog will not spend very much time on the fundamentals of these two technologies instead you are recommended to read our previous blog post on Optical Particle Counting and our white paper on Multi-Color Flu… Read More
In this application note, we plan to combine these two topics and look at one of the key factors that affects laser diode bar lifetime – stress and strains. Despite the extreme power output of laser diode bars and stacks, which can exceed 2 kilowatts of power in quasi continuous wave (QCW) operation, the facet coating technology has improved to the point where it can handle intensities well over 20MW/cm2 making catastrophic optical damage (COD) no longer a limiti… Read More
In the last installment of our Laser Diode Fundamentals series, we took a deep dive into the underlying physical properties behind the longitudinal mode structure of laser diodes. In that blog post, we explained the advantages and disadvantages to both multi-longitudinal mode and single longitudinal mode diode lasers. We are going to expand on what we learned about single longitudinal mode diodes lasers and take a look at a wide range of stabilization techniques which are used to ensure that a laser maintains single mode performance during its … Read More
Flashlamp pumped pulsed Er:YAG lasers have been widely utilized in dermatology and dentistry as an alternative to CO2 lasers, but historically continuous wave (CW) and quasi-continuous wave (QCW) Er:YAG lasers were problematic due to their unique energy level decay times. Our friends over at Sheaumann Laser have worked hard over the years to figure out a methodology for overcoming these issues and have since developed a diode-pumped 2.94 micron Er:YAG lasers known as the MirPac series, with a maximum output power of … Read More
Being produced in nature through the anaerobic decomposition of organic matter trapped beneath the sedimentary layers of the earth, it is found abundantly near other fossil fuels such as in coal mines. Even though it is the simplest of all the hydrocarbons, methane gas is used widely in industrial applications such as power generation, transportation, and industrial chemical manufacturing, in addition to its more commonly known use as a consumer fuel source…. Read More
Micromanipulation of sub-millimeter objects is one of the more underappreciated technical challenges in modern scientific research. To fully understand their properties, objects such as dielectric spheres, viruses, bacteria, living cells, organelles, small metal particles, and even strands of DNA all require precise positioning under a microscope even though they can often only be tens of nanometers in size. Since these objects are too small to manipulate with a pair of tweezers, a non-contact method needs to be used to trap and then manipulate these … Read More
Additive manufacturing, or as its more commonly referred – 3D printing, has revolutionized manufacturing processes over the past ten years. This technology which was once reserved for high-end research and prototyping applications is now so commonplace that many elementary and middle schools through the US are utilizing them as part of their STEM curriculums. Regardless of cost or complexity, all additive manufacturing processes consist of four primary stages: 3D modeling, digital data processing, 3D object construction, and post-p… Read More
On April 10th, the scientific community was elated at the release of the first-ever image of a black hole in the center of the M87 galaxy in the Virgo Cluster. By Imaging the photon ring around the black hole shadow and utilizing the Schwarzschild Radius, scientists were able to not only validate the existence of black holes which were predicted by Einstein’s General Theory of Relativity they were also able to accurately measure the mass of the black hole at 6.5 billion times that o… Read More
Holography is simultaneously one of the most well-known and yet most misunderstood optical techniques. The word hologram derives from the combination of two different Greek words “holo” meaning “whole” and “gram” meaning “drawing.” Understanding the origin of the word itself helps to illustrate that a hologram is not just simply a three-dimensional photograph, but instead, it is a recording of “the whole” wavefront reflected or transmitted by an object including both its amplitude … Read More
Optical particle counting is widely deployed in cleanrooms around the world as a means for counting and sizing the number of particles in the air. Most people who have ever worked in a clean room, are familiar with the Federal Standard 209E cleanroom classifications, such as class 10,000, class 1,000, or class 100, with the lower the number corresponding to the cleaner the room. Where many people have misconceptions is that the classifications are not solely determined by the number of particles in the air but also t… Read More
According to the American Association of Dermatology (AAD), acne is the most common skin condition in the United States, affecting up to 50 million Americans annually with a nontrivial percentage suffering from a chronic form of the condition. Fortunately, for people suffering from persi… Read More
RPMC is excited to announce our most recent white paper titled “Single Frequency Fiber Lasers for Doppler Lidar.” Doppler lidar takes advantage of the fact that when light interacts with moving object, it experiences a frequency shift. This frequency shift allows you to measure the veloci… Read More
Mass spectrometry is an extremely powerful analytical tool for chemical analysis, which is widely utilized in applications ranging from forensics to pharmaceuticals, because of its ability to detect the atomic constituents of an analyte but also determine their relative concentrations. This process is facilitated by ionizing the sample and then passing it through both an electric and a magnetic field causing them to spread out based upon their at… Read More
According to Grand View Research, laser hair removal is one of the most popular medical laser applications worldwide and is projected to reach 2.8 billion dollars annually by 2028. Laser hair removal became popular so quickly that by 2005 Alexandrite (the laser of choice at the time) was the second most popular laser crystal grown worldwide, even though there were no other mainstream applications for Alexandrite laser technology. As of 2020, laser diodes held the lion’s share of the market (over 39%), due to their high precision, efficiency, small footprint, and relatively… Read More
RPMC Lasers would like to introduce the new 35-page Laser Diode catalog from LDX Optronics. It has additional standard wavelengths and packages, complete drawings for all packages, and laser diode handling guidelines and precautions. Our management team has over five decades of combined experience in semiconductor laser manufacturing. We emphasize quality and consistency in our manufacturing processes. Each wafer receives extensively qualification and life testing, and each device undergoes a thorough burn-in prior to… Read More
Jenoptik will be presenting its latest development in the field of high-power laser sources for industrial material processing, and in particular for direct diode laser applications. The new diode laser with passive cooling makes quite the impression with its extremely high power output of 275 watts and long service life in both CW and hard pulse app… Read More
Bright Solutions’ sub-ns DPSS lasers are field proven subsystems for portable lidar sensors. Many successful installations worldwide have confirmed the reliability of these laser sources in land vehicles, as well as airplanes and helicopters. Maintaining the concept of a ruggedized all-in-one IP 67 package, Bright Solutions has now developed several higher power versions, featuring over 100W of average power at 1064 nm, with pulse durations in the range of 300 to 900 ps, and a repetition rate up to … Read More
After several years of in-house testing and intensive testing in the field for some pilot programs, Bright Solutions is happy to announce their new UV versions of the Wedge Lasers, the industrial sub-ns DPSS laser solution. The Wedge HF and XF offer a pulse width less than 450ps, peak power up to 80 kW, are configurable in several frequency ranges from Single Shot to 200 kHz, and include the low jitt… Read More
Photodynamic therapy (PDT) is a common term in the medical community which has been used to describe treatments ranging from near-infrared laser-induced vascular dilatation to photo-thermal excitation of nanorods embedded in cancer tumors. For the purposes of this blog, we are going to focus on a rapidly growing subset of PDT where laser light is used to activate both dermal and subdermal treatments utilizing a specialized drug, called a photosensitiz… Read More
Bright Microlaser’s activity is focused on continuous development, pursuing higher reliability, simplified usability, maintenance and service for its devices. This opens up more and more opportunities in new markets and emerging applications, making Bright Microlaser a leading man… Read More
Laser-based techniques have been gaining more and more popularity in the medical and biomedical fields. In previous posts, we have discussed a wide variety of such applications ranging from Laser Diode Crown Troughing in Dentistry to Laser-Induced Breakdown Spectroscopy (LIBS) in Biomedical Applications, and in this blog post, we are going to take a look at another up and coming technique called Photoacoustic … Read More
Here at RPMC Lasers we are excited to announce our exclusive North American distribution relationship with The Bright Solutions Group, providers of state-of-the-art pulsed DPSS lasers. For over 15 years we have worked closely with Bright Solutions, and with their recent restructuring, The Bright Solutions Group is expanding our exclusive distribution agreement to all four sister companies in … Read More
At RPMC we are excited to announce the release of our most recent white paper focused on fluorescence microscopy titled “Multi-Wavelength Laser Sources for Multi-Color Fluorescence Microscopy.” Multi-color fluorescence microscopy is a widely used technique to generate multi-spectral images of cells and other small objects for identifying the spatial distribution of molecules of interest in complex heterogeneou… Read More
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