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Here's your solution: A three-level transition of Yb3+ lases at 974 nm. It frequency doubles to 487nm. Three level lasing transitions are not the easiest to work with because the lower lasing level is also ground state. This means that non-stimulated Yb3+ can absorb the photons just emitted. You...

We no longer use the subdomain store.oemlasersystems.com. We had an entry in the DNS zone file to forward to the oemlasersystems.com address but it would mess up security. If you go to the main domain name you will get there.

I believe Adam said the blades were in his laptop case. Those went through the other X-ray machine. It was probably at that point where some one around there said "you're Adam Savage from Mythbusters" and the agent looked up and missed doing a complete visual scan of the image. They're human but...

I know you won't do this but this is the correct method for selling lasers in the United States: Laser Products and Instruments Records and Reporting (Radiation-Emitting Products) Getting a Radiation Emitting Product to Market Important Information for Laser Pointer Manufacturers If...

Cool find Dave. That is slick.

Since OEM Lasers was mentioned please notice that none of our portables is Class IV. The class IIIb systems all have key switches, beam delays, emission indicators, aperture covers, and interlocks. That's the way we roll. Because of this they are accessioned properly and always import without...

The solution lies in the definitions of ionizing versus non-ionizing radiation. Your concern with a 405nm should lie in thermal damage. Thermal damage does not cause cancer as the amount of heat required to damage the DNA in the nucleus has long since denatured the proteins outside of the...

That's the FDA clearance hold. What they are doing is contacting the exporter for an FDA 2877 or a proper harmonized tariff code. It all depends on what WL sends to them, if anything. They may or may not contact you for the 2877 if they don't get a response from WL. Generally UPS will contact...

I cannot say what you will see after 532nm because the filters are protective up to and including 532nm and color perception is subjective. As mentioned 532nm DPSS has a FWHM of +/-1nm. Anything beyond that can pass the filter based on the response curve with more and more visible as the...

How much do you really want to pursue it? What they want is an FDA 2877 Import of Radiation Emitting Devices. Your lasers do not have accession numbers nor do they meet the requirements of any other selection on the form. Do not submit a false 2877. Any person who knowingly makes a false...

There is no federal law against owning a laser regardless of output. There are often state or local laws, however. Sometimes state OSHA or environmental health laws exist prohibiting ownership but these are often related to medical laser systems. Use of the laser system in public, whether for...

The 10 second exposure is for direct or specular reflection. You would have to hold your head in the beam for 10 seconds in the same spot at 10cm from the aperture. They will work without problem for normal operational use and diffuse reflection indefinitely. Your green LEDs are >532nm. The ARG...

We actually talked about doing a calendar. The office is about 1km from the eastern end of Michigan State University where a collection of dormitories are located. We could have had 12 fine specimens lined up to do bikini shots with operating lasers (if the Playboy turn out doing the girls of...

The difficulty in choosing eye protection is that it was never designed for hobbyists so you get OD and VLT ratings that don't quite fit the needs. For example the ARG filter we offer is OD7 which, at the moment, is quite high for the output powers available for common hobby type lasers but it...

That could result in indirect depolarization of the fight/flight response in the subject and a trip to emergency room to have your laser removed from your rectum. :crackup: The preferred experimental set up is a fiber inserted into the brain directly.

473nm, 589nm, 593nm, and 635nm are all used in optogenetics. Originally, 473nm and 593nm were used. This has since expanded. Some really smart people (I believe it was Karl Deisseroth now at Stanford is the leading figure) figured out that genetically altering certain genes would create proteins...

Albeit we do a bit more because we do some custom stuff but we use the following equipment in our lab: We use Ophir lab power meters with various detectors and Spiricon beam profilers. Our spectrum analyzer is by Ocean Optics. We also have oscilloscopes we use for beam noise measurements and...

Linear resonator, end pumped SHG lasers require the 808nm pump diode to be focused within the Nd:YVO4 or Nd:YAG at a specific point based on the curvature of the OC mirror so that it is reflected back down through the waist. You will only use a small cross section of the lasing medium for...

Re: duration of exposure with goggles/glasses The power rating of the lasers used to test lenses for certification are never indicated because the actual calculations used to determine the OD required for a particular laser take into account the wavelength and power/energy of the laser. Then...

The 10 second rating is the standard for OD testing. Laser eye protection is not designed for you to look into the beam all day. The 10 second rating is the OD versus a laser that takes 10 seconds at 10cm to melt through the lenses or 100 pulses. When they are tested in the lab each sample is...