There is no commonly accepted definition of the property “high power”; in the context of laser material processing, it usually means multiple kilowatts or at least a few hundred watts, whereas for laser displays some tens of watts may already be considered as high power. In some areas, this label is assigned simply for generating a significantly higher output power than other lasers based on the same technology; for example, some “high-powered” laser pointers emit a few hundred milliwatts, whereas ordinary laser pointers are limited to a few milliwatts.

Our high-power solid state lasers push the word “high” a bit further. High energy per pulse (1 J), high repetition rate (300 Hz), high average power (300 W) and high peak power (30 kW) together in the big brother of the family. We can manufacture our high energy solid state laser solutions with Nd:YAG or Nd:YLF as active media and use frequency conversion to deliver unprecedented laser properties in IR, green and UV while increasing the most demanding applications’ throughput.

Additional aspects come into play for pulsed lasers. For example, the peak power may be as important as the average output power for a Q-switched laser. Depending on the pulse repetition rate and pulse duration, the peak power may be very high even for a laser with a moderate average output power. Usually, a high average power and not only a high peak power is expected from a high-power laser.

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Learning how to masterfully use contrast is one of the most important steps to becoming a true photographer. Contrast is simple enough to understand, and once you figure out how to apply the various techniques, you’ll be unstoppable.

There are other ways to create contrast in photographs. You can be a bit more abstract with what you’re doing by playing with natural scenes.

Color contrast works really well with warm and cold colors playing off each other. Warm colors like red, yellow, and purple always work best with colder colors like blue and green. You always want to have a warm color set against a cold color, or the other way around.

When compared to high contrast images, low contrast ones are significantly less intense. They still offer a high degree of contrast, just with a more subtle attitude.

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In photography, these clashing colors can be used to create great color contrast. In other words, they can make a photograph pop because they lead a person’s eye around the photo. You can also make your subject stand out from the rest of the scene by having them in a contrasting color.

SHIPS TODAY: AeroDIODE offers high-power laser diodes with up to 450 W output. Most models for 808 nm, 915 nm, 976 nm or 1064 nm are available as stock items or assembled with a turn-key high-power laser diode driver with air-cooled temperature regulation. Versions with a high-power optical fiber connector or with a 3-mm output collimator are available.

To create high-contrast photos, remember it’s all about your choice of color and texture. You can use strong lighting for darker shadows and brighter subjects. You can also shoot in black and white to automatically add more contrast.

Pictures with high contrast show an obvious difference between the brightest and darkest elements. One part of an image will be highlighted while the other part will be darkened. This is what makes something high contrast, having a large difference between light and dark.

If you see something like a single blossoming tree in the middle of an otherwise empty field, this can be used as the subject of a photoshoot. Using the tree as your subject and the empty field as your background, you’ve created a contrast photo. The tree pops against the empty field. It’s more of an abstract concept, but it’s a fun exercise.

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By playing with different tones, colors, and textures, you can create interesting contrast in your pictures. At its core, contrast is all about the play between highlights and shadow. But you can take it even further. If you master the art of contrast, you’ll be able to overlap different types of contrast to make deep, complex, and striking pictures that will leave your viewers breathless!

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This encyclopedia is authored by Dr. Rüdiger Paschotta, the founder and executive of RP Photonics AG. How about a tailored training course from this distinguished expert at your location? Contact RP Photonics to find out how his technical consulting services (e.g. product designs, problem solving, independent evaluations, training) and software could become very valuable for your business!

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Tonal contrast focuses more on light and dark tones rather than details and color. Your camera actually uses tonal contrast in its algorithm when autofocusing. Your camera can detect a certain amount of contrast to determine how to best take a picture in automatic mode.

Low contrast images have more middle tones and are more about differences in the tonal range. For example, low contrast images usually include black and white pictures with quite a bit of grey in them, instead of just pure black and white.

When you look at an image and notice that the dark parts are extremely dark while the brighter parts are ridiculously bright, you’re noticing contrast. Contrast is when one part of the photo looks extremely different from another part of the photo. Because so much detail goes into modern pictures, you’re able to do so much more with color contrast than ever before in photography.

CNI high power lasers include both DPSS lasers and diode lasers. They are widely used in medical, scientific research, material processing and industrial applications. Available wavelengths are include 532 nm, 556 nm, 589 nm, 660 nm, 808 nm, 880 nm, 980 nm, 1064 nm, 1319 nm and others. The average output power of 532-nm green lasers can be up to 200 W, and the 1064-nm infrared lasers deliver up to 500 W.

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For example, silhouette photos are high contrast. When you put your subject between your camera lens and the sun, you create an extremely bright background with your subject being bold dark. This is a high-contrast photo.

Contrast in photography describes the visual difference in tones, textures, highlights, shadows, and colors. Contrast literally means difference. And in photography, the difference is in tone and color. Specifically, the scale of difference between what’s black and what’s white. Without contrast, every picture would simply be extremely dark or extremely bright, maybe with a shade of grey thrown somewhere in the middle.

One of the easiest ways to use texture is by utilizing the background. If the main subject of your photograph is something that has a lot of texture, put it against a soft background. This will make the subject more immediately interesting to the eye.

The best time to practice low contrast photography is when you’re trying to build a story. Images with lower contrast are better at representing the scene. For example, to represent the quiet sloshing of the ocean waves or the dreaminess of a sunset.

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Color contrast has to do with the color wheel, which you might remember from school. The color wheel consists of all the primary colors on the inside circle and the secondary colors on the outer circle. The colors that are on opposite sides of the wheel are in most contrast from one another. This is how you can utilize color contrast in photography.

Contrastexamples

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Contrastadjective

For example, red is on the opposite side of green on the color wheel. This is because the two colors are in maximum contrast to each other, as opposed to something like red and blue. Another example is purple and yellow, as they stand out from one another with high contrast. The same can be said for blue and orange.

An aspect of great importance for further laser development is that of power scaling, based on certain power-scalable laser architectures. Even for not power-scalable laser types, it can be very helpful to understand the scaling properties of various parts or techniques.

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Lumibird manufactures a wide range of high power lasers thanks to its expertise in three key technologies: pulsed solid-state lasers (nanosecond range), CW and pulsed fiber lasers and fiber amplifiers, and laser diodes. Various application areas are addressed, in industry (manufacturing, lidar sensors), science (laboratories and universities), medical (ophthalmology) and defense.

Contrastmeaning in Hindi

Frankfurt Laser Company offers fiber-coupled high-power diode laser systems with up to 300 W output power. Separate diode bars are also available.

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AFS’s customized kW average power and multi-mJ pulse energy ultrafast laser systems are based on AFS leading-edge fiber technology. They unite multiple main-amplifier channels using coherent combination, a technology which AFS has matured to an industrial grade. All essential parameters are software-controlled and can be tuned over a wide range, making them an extremely valuable tool for numerous application.

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At wavelengths between 3.9 and 9.7 μm, Alpes Lasers offers multiple high power Fabry-Pérot lasers up to 1.5 W. These Quantum Cascade Lasers have a minimum average power of 1 W and more than 9 W of peak power. Available in a collimated HHL package with a dedicated driver, these lasers can be used for free-space optical communications, energy deposition, illumination and IR countermeasures.

Just remember that no particular form of contrast is better than the other. It all depends on your style. Low contrast photographs can create a calm and soft mood in a photograph, or even make it a little gloomy. And if you want a more dramatic, exciting, or even mysterious photograph, you want to try high contrast.

Incontrastsynonym

To make things really simple, tonal contrast means the range between pure white and pure black. So, to have high tonal contrast, you will need to have the whole range shown in a photograph, with some parts being pure white and other parts being pure black. You can also throw in tones of grey throughout the spectrum to make the white and black parts pop more.

A perhaps not very practical, but theoretically very interesting high-power laser concept is that of the radiation-balanced laser. Here, the heat generation in the gain medium is essentially eliminated by optical refrigeration. The power conversion efficiency, however, is quite low.

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Now we’re going to talk about the different types of contrast in photography, from high contrast to low contrast, and from color contrast and tonal contrast.

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The Lumics LuOcean diode lasers are ideal for OEM integrators aiming to develop state-of-the-art end-user laser systems, featuring single emitters with a very long service life and up to four different wavelengths. Users can choose from a wide range of wavelengths, including 670 nm, 760 nm, 785 nm, 808 nm, 890 nm, 915 nm, 940 nm, 975 nm, 1064 nm, 1470 nm, and 1940 nm with custom wavelengths and specifications available upon request. The modules can be configured to match the customers power requirements. Optional enhancements such as temperature, fiber and power monitor sensors and pilot beams further extend the module's capabilities.

Material processing with high-power lasers is the second largest segment of laser applications concerning global turnovers (after communications).

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You can use this method in all kinds of daily scenarios. A person with orange hair might look more interesting standing against a blue wall. It’s all about playing with intensity, composition, and definition.

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An important safety principle in the area of high-power lasers is to enclose the laser setup with a solid housing, and ideally also the whole area where dangerous laser beams can be present. Interlocks can prevent the operation of a laser at times where persons are in a hazardous area.

One way of doing this is by changing the depth of field. Create a shallow depth of field by making sure your subject is far from the background while your camera is closer to the subject. This will soften the background while sharpening the subject, giving you great contrast in the image.

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The one time that tonal contrast is especially relevant is when you’re taking black and white pictures. Because you don’t have any colors to play with, you need to focus on the tone. Your black and white photographs are going to have dark tones and bright tones, which makes a high tonal contrast.

Another example could be something like a rusty metal nail sticking out of a blue piece of wood. The silver of the nail is in contrast to the wood, making for an awesome close-up photo. There are great examples of this everywhere around you.

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If your background is soft or blurry but your subject is clearly in focus, you’ve created a photo with great textural contrast. Anyone who looks at the picture will immediately be drawn to the clear element, with the background being more of an afterthought.

QPC Lasers manufactures diode lasers with the highest powers and brightness in the industry at wavelengths ranging from 780 to 2000 nm.

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Low contrast images are also softer, with a less intense saturation of colors. Take the example we talked about earlier with the orange sky against the blue water. Rather than this image being extremely intense with bright oranges and shocking blues, it would be a little more mellow. With low contrast, you get the same scene but it’s more moody, even melancholy because the colors don’t pop as much.

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Forget all about colors, you can also show great contrast in photography by using different textures. By combining soft and rough textures in a photograph, you get an extra edge that makes it more appealing to the viewer.

For example, if your subject is standing in a field of green grass, have them wear something red. These contrasting colors will make your subject stand out against the green background. The same can’t be done if you’re subject is wearing something green or blue, it simply won’t attract as much attention. Your subject won’t look as distinct because the colors will blend more naturally with the background.

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To create a photograph that’s high contrast, all you really need to do is have a single strong point that’s in stark contrast to the rest of the image. But you can also do this by having intensity between textures and colors. For example, taking a photograph of the ocean at sunset. The intensely bright yellow and orange sky against the vividly blue water will make a high contrast photo.