The calculation above assumes a uniform beam intensity profile. (in the atmosphere). Dielectric mirrors function based on the interference of light reflected from the different layers of dielectric stack. The power density of your beam should be calculated in terms of W/cm. Thank you. • When a wave is reflected in going from a medium with a lower refractive index to a higher refractive index the phase is shifted by p . Circular polarization is maintained upon reflection; however, the handedness is reversed (i.e. I seem to lose more light when the beam is highly focussed on striking the mirror. The reflectance of a coating is dependent on the wavelength of the light source, in addition to the angle of incidence. Hi. Lett. And the exposure time you used? Yes we can provide more information regarding our E02 coating's performance. What wavelength is your beam? There are also parabolic mirrors, having a surface with a parabolic shape. In the latter case, the phase dispersion of the reflected light can also be controlled (see Chirped mirror). Because dust or other particles on the surface of an optic can cause damage at lower thresholds, we recommend keeping surfaces clean and free of debris. A techsupport representative will contact you directly with more information. Thank you for contacting Thorlabs. We recommend using our low GDD mirrors such as the ones found on this page instead : https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=10940. Hi Alex, thank you for contacting Thorlabs. I expect the polarization dispersion will vary from one production lot to another, and we do not test for this in each lot. If so, is it s- or p- polarized? I have one question about the refractive index of bb1-E03 mirror coating, could you please tell me details about this number? Alex. Additionally, itd be helpful to know when its the cement (in the case of PBSs and achromatic lenses) thats damaged, vs the optical coating, vs the actual optical element. I have reached out to you directly with information on the top layer material. An AC127-030-C achromatic doublet lens has a specified CW LIDT of 350 W/cm, as tested at 1550 nm. In the meantime, I will contact you for discussing the LIDT specifications of any particular optics you may be interested in. I have reached out to you directly to discuss this further. Hello, thank you for contacting Thorlabs. I am going to use the E03 coating for Ti:Sapphire laser (routing mirrors to my set-up) I can see only E02 and E03 for 2" square mirrors. n. 1. n. This system falls somewhere between the regimes of CW and pulsed laser induced damage, and could potentially damage an optic by mechanisms associated with either regime. This is the same principle used in multi-layer anti-reflection coatings, which are dielectric stacks which have been designed to minimize rather than maximize reflectivity. Hello Xiaodong, thank you for contacting Thorlabs. Therefore, an adjustment must be applied for the shorter pulse duration of the system under consideration. The lot cost is typically divided into quantity, so pricing/pc does become more competitive as the chamber fills up. Life sciences, astronomy, metrology, and solar engineering are only a few of the industries which depend on our precision mirrors and other optical components. It would also be helpful to have the know the material and thickness of the multilayer coatings (perhaps an index versus distance from the blank mirror plot?). Hello Dominic, thank you for contacting Thorlabs. Hello, thank you for contacting Thorlabs. What is the Thermal Expansion coefficient of the Fused Silica Optic Mirror? Angle of incidence = 45 degrees. I'm interested in the reflectance of the E01 coating at an angle of 60 and 75 degrees. Such mirrors are mostly used in adaptive optics for correcting wavefront distortions. In the reflectance plots for 45 deg AOI, isn't it true that the unpolarized curves have to be the average of the p- and s- polarized curves? Hi, your website, social media, a discussion forum, Wikipedia), you can get the required code here. via e-mail. Can you give information on the phase shift in the E02 coating between s- and p-polarized light (for a wavelength of 532 nm and an angle of incidence of 45 degree)? Hello, thank you for contacting Thorlabs. Hello, thank you for contacting Thorlabs. Response from Javier at Thorlabs to thierry.taillandier-loize: Thank you very much for contacting us with your request. The round Ø1/2", Ø1", and Ø2" mirrors are also available in packs of 10 at a discount over the individual price. Thanks a lot in advance As previously stated, pulsed lasers typically induce a different type of damage to the optic than CW lasers. Examples of their applications include laser cavity end mirrors, hot and cold mirrors, thin-film beamsplitters, high damage threshold mirrors, and the coatings on modern mirrorshades. The output energy density of your laser is 0.7J/cm^2, so our lenses should work. We have contacted you with a theoretical GVD curve of our E03 mirrors. Response from Laurie @ Thorlabs to ulbricht: Thank you for your inquiry. via social media: These sharing buttons are implemented in a privacy-friendly way! Custom mirrors can be requested by emailing techsupport@thorlabs.com. In this ultra-short-pulse regime various mechanics, such as multiphoton-avalanche ionization, take over as the predominate damage mechanism [2]. With preview image (see the box just above): For Wikipedia, e.g. The graph to the right shows why expressing the LIDT as an energy density provides the best metric for short pulse sources. In addition to designing traditional glass mirrors, Inrad Optics employs proprietary single-point diamond machining and optical polishing methods to produce precision metal mirrors used in space telescopes and scanning systems. The energy density of the beam can be compared to the LIDT values of 1 J/cm2 and 3.5 J/cm2 for a BB1-E01 broadband dielectric mirror and an NB1-K08 Nd:YAG laser line mirror, respectively. A response from Tyler at Thorlabs to srubin: I will email you the data that you have requested but I do not recommend using it to determine the exact cutoff wavelength for the E02 mirror coating. Thanks in advance. More detailed plots that also include polarization information are available under the Reflectance Plots tab. The coatings are only optimized for these specified ranges. You should move to an up-to-date browser such as Microsoft Edge, Firefox or Chrome. Thank you again for your excellent suggestions. Mirrors of this type are very common in optics experiments, due to improved techniques that allow inexpensive manufacture of high-quality mirrors. I was wondering if I can get a complete plot for the reflectance of the BB05-E03 mirror, at an angle incidence of 8. would be useful to have either a high res plot available or to download the data of the typical plot. I would like to ask if you have information on how the mirrors EO2 and EO3 changed the polarization for different wavelength and for 45 deg and aigu angle of incident light? For tight focusing, one often uses off-axis parabolic mirrors, which allow one to have the focus well outside the incoming beam. The shaded region in each graph denotes the spectral range over which the coating is highly reflective. If the coating is multiple layer structure, what are the thickness of each layer? The surface shape (e.g. Pulsed lasers with high pulse repetition frequencies (PRF) may behave similarly to CW beams. Pulses shorter than 10-9 s cannot be compared to our specified LIDT values with much reliability. If you have further questions or concerns, please let me know.

.

Dr Jart+ Tiger Grass, Under Your Scars'' - Godsmack, Lg Nanocell 90 Series 2020 86 Inch, Little Monsters Boy, Andrew Zimbalist Books, Ford Fiesta St For Sale South Africa, Guiding Lands Map,