Recent content by nordmoon

Yes but I don’t understand how to determine the measurement uncertainty, for the measured pulse area, with this oscilloscope ?

If I remember correctly it’s a DPO7054 or DPO7254.

I have an Textronics oscilloscope with 500 MHz sampling rate and using an 50 ohm cable for the measurement. I can’t find the measurement uncertainty in the manual or the calibration sheet. In the calibration sheet it says an ‘uncertainty’ for the used channel in divisions, for example 1m up to...

Okay, but for the light that goes through the beam splitter? Will it change the position of the image (assuming there is the same lens in front of the beam splitter), with and without the cube beam splitter? I always thought it was unchanged but I have noticed a difference of the location of my...

I have an plano-convex lens with focal length 75 mm. The object is 325mm from the lens. a) Where is the location of the image after the lens? b) Where is the location of the image if an beamsplitter is placed after the lens? My solution, questions: a) a = 325 mm b = ? mm f = 75 mmm...

I agree. So my embarrasing question is if I get a reflected transmission of 1,32 nJ. How much is the input power if I have splitting ratio of 52:46 (T:R)?

The point of the beam splitter is that I'm only measuring the reflected beam in my actual setup (since the transmitted beam goes into a camera). The laser has the same wavelength (and is the same type of laser) so it should be the same splitting ratio from unit to unit. In the above I measured...

I'm having a brain freeze right now and I need some help. :frown: I have a 50/50 beamsplitter (non-polarizing) with 5% tolerance. Test measurement (with a laser at a certain wavelength) gave that I'm transmitting 5.36 units and reflecting 4.6 units (49.5 transmitted; 42.6% reflected). Units...

I see, Thank you. I will just change the lens then.

Well obviously I’m not watching the image directly, but rather on a screen or with a camera and some filters. And I am using safety googles at all times. The shape of my light source isn’t important but for simplicity we can say it’s a waveguide. I just want to image it onto my screen or...

Well the laser source is not a point light source. Instead it has an rectangular profile, which I want to image onto a camera. Would I see the virtual image behind the lens? With image distance of -125 mm, i picture the image to be seen 125 mm in front of the lens (and not behind the lens like...

Homework Statement This isn't really a homework, but I am trying to figure out how this would work. I have an plano-convex lens with an focal length of 500 mm. I have an laser source that I like to focus on, to the infinity. I.e. I like to see the laser lobe. Case: What happens to image of...

I have two measurement cases in my setup. An divergating laser beam (not an gaussian) is measured at two locations from lens , at nearby i.e. 400 mm, and far away, > 2000 mm away. My lens is an plano-convex lens. Which side should face the laser in these two cases? I know that the...

Ok I feel like i need to simplify this a bit. My question is, if you have an biconvex lens and place it in front of your eye, you will see enlarged image of what you are looking at. Is this correct? If you now look at different objects at different distances, is there a way to remain focus on...

Homework Statement I have a system like image below An object 1 (OP = Object plane) is projected onto the image plane 1 (IMP) where an eye is located, with a beam splitter (BS). This eye is also looking at some object at distance far away. I would like to magnify this image of the object at...