Author: Robert Chimenti

RPMC Lasers Blog

High-Energy Q-Switched Lasers for Harmonic Generation - Part 2

In our last blog post, we highlighted the benefits of high-energy q-switched lasers for harmonic generation.  In that article, we reviewed how q-switched lasers work and why the resultant short duration, high-energy pulses are required for...

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Why Choose LDX Optronics?

LDX Optronics and RPMC Lasers have been partnered together since the late ’90s to provide customers with the broadest selection of diode wavelengths and packaging configurations on the market.  Over the course of our nearly 25-year relationship with...

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The three most common mistakes when mounting and heatsinking a TO-can

Diode lasers come in a wide variety of packaging configurations. Each package type provides different pros and cons when it comes to beam delivery, heat sinking, integration, and so on.  The two most common packages for what we call “component level”...

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Choosing the Right Connector for Your Fiber-Coupled Laser Diode blog

Having trouble deciding which fiber-coupling connection is best for you? Check out our newest white paper, titled “Choosing the Right Connector for Your Fiber-Coupled Laser Diode."  In this paper, we review:

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High-Energy Q-Switched Lasers for Harmonic Generation - Part 1

Solid-state lasers offer many advantages over other laser sources. One of their most unique benefits is the ability to produce extremely high pulse energy.  Solid-state lasers can achieve this through q-switching, which is a process where the...

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Why should single-mode fibers have an angle polished?

When you look through a window at night and see your reflection, that is because on average 4% of the incident light is reflected at the interface between air and glass.   While 4% may seem like a small amount when dealing with lasers, a 4% back...

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Why Shouldn't You Voltage Drive a Laser Diode?

Electric power is determined by the product of the voltage and current supplied to a device. As a result, when designing an adjustable power supply, one of those two parameters must be variable, and the other constant if you want to be able to tune...

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Recent Developments at Integrated Optics

For several years now, RPMC has been partnered with Integrated Optics (IO) in Lithuania to provide you with the world’s smallest turnkey lasers. Over the past eight years, IO has developed a proprietary optics assembly method based on robotics and...

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Why are single-emitters winning over bars

Ever since the industrial fiber laser boom in the early 2000's, there has been an ongoing debate about the most efficient way to produce high power, fiber-coupled, diode pump lasers. At its root, this debate comes down to the question of ...

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How do DPSS lasers fill the 'yellow gap'

How do DPSS lasers fill the "yellow gap?"

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How to get the right laser spot at the right distance? - Part 2

In part one of this blog series, we set out to answer the question of “how to get the right laser spot at the right distance?”  As we went on to explain, this simple question doesn’t have a simple answer, especially when we are talking about...

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Requirements for Time Gated Active Night Vision Imaging Systems Blog

At RPMC, we are excited to announce the release of our newest white paper titled “Laser Requirements for Time Gated Active Night Vision Imaging Systems."  In this paper, we review the fundamentals of modern night vision camera technology. We then go...

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The Advantages and Disadvantages of Passive vs Active Q-Switching

Q-switching is the most effective method for producing high energy pulsed lasers.  While there are many different varieties of a q-switch, they all follow the same basic operating principle.  Q-switches temporarily increase the cavity losses so that...

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What is Single Longitudinal Mode

  Within the laser community, one of the most overused and often miscommunicated terms is the phrase “single mode.”  This is because a laser beam when traveling through air takes up a three-dimensional volume in space similar to that of a cylinder;...

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Why a larger beam results in a smaller spot size in laser designation?

Back in September of 2018, we published a blog post titled “Laser Source Requirements for Modern Laser Designator Systems,” in which we took a deep dive into the fundamentals of laser designation as well as the military’s requirements for such a...

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Light-sheet Microscopy: Why are Two Beams Better Than One?

  In the past, we have published several different blogs and whitepapers relating to both Raman and fluorescent confocal microscopy.  Therefore, there is no need for us to repeat the basics here, so we will simply point out that while traditional...

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What is Laser Amplifier Noise?

  Laser amplifiers are an invaluable tool because they allow for a laser’s power to be increased while maintaining its basic spectral properties.  In a blog post published last year titled “Laser Amplification for Power Scaling,” we described the...

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How to get the right laser spot at the right distance. - Part 1

  Building upon our recent series of blog posts on fiber-coupled diode lasers, we now turn our attention to how you can manipulate the laser light coming out of a fiber.  Perhaps the most common question we get here at RPMC, is how to get a specific...

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Analog vs. digital modulation - Which is better for you?

  For people without a background in electrical engineering, understanding the finer details of analog and digital modulation can be quite challenging.  This is compounded by the fact that most texts on the subject already assume that the reader has a...

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Pros and Cons of Pigtailed vs. Detachable Fiber Coupled Laser Diodes

Approximately half of the laser diodes that we provide here at RPMC Lasers are fiber-coupled.  For this reason, we have decided to build upon our recent two-part blog on fiber coupling in our Laser Diode Fundamentals series by exploring the...

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Interferometry for Precision Measurements

Interferometry is one of the most widely used precision measurement techniques known to humankind.  The precision provided by interferometers has enabled countless scientific discoveries and breakthroughs.  These range from the Michelson and Morley...

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How Removing the TEC Increases Laser Diode Stability

As most people already understand, a laser diodes performance is highly dependent on its operating temperature, which is why most mid- to high-end laser packages utilize embedded thermoelectric coolers (TECs).  The strong temperature dependence arises...

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3 important things when choosing a laser combiner for Flow Cytometry

As discussed in a previous blog post, flow cytometry is an extremely valuable methodology employed by scientists around the world for analyzing individual cells via fluorescence tagging.  In that blog titled “Flow Cytometry Review,” we went to great...

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Automotive LIDAR

Over the past year, we here at RPMC Lasers have published several different pieces of technical content on various LIDAR applications.  Some of our more recent posts include a white paper titled “Single Frequency Fiber Lasers for Doppler LIDAR," and a...

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Laser Diode Fundamentals: Bandgap Energy and Wavelength

  Diode lasers are unique amongst most other laser sources for their extensive range of available wavelengths.   The breadth of output wavelengths has allowed diodes to become one of the most versatile laser sources, with wavelengths available from...

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