From its humble beginnings in 1976, Ophir has grown to become the world leader in laser power meters and other laser measurement technology.
I spoke to Ephraim Greenfield, Ophir founder and CTO to get some insights on the origins and progression that Ophir took through the last four decades.
There are several considerations when you’re trying to maximize laser power meter accuracy. One that I don’t usually mention is perhaps the most obvious question: How do you know the entire laser beam is actually hitting your sensor? I mean, if you have a visible laser, fine. But most lasers these days are in the…
When laser power gets high enough, interesting stuff happens. One issue that comes up often with laser optics under high power is thermal lensing. Basically, the heat causes changes in the optical properties of the lenses. If we’re talking about the focusing lens in a laser delivery head, this means changes in the focal point.…
Pyroelectric sensors are used to measure laser energy. Depending on the sensor, they can measure up to a rate of 25 kHz. However, not all meters can handle such a high rep rate. (In fact, only the Pulsar PC interface goes up to 25 kHz. Juno can get up to 10 kHz. Some of the…