Calculator for Temperature Rise in Uncooled Laser Power Sensors

This calculator determines the temperature increase in a block of aluminum (like most Ophir power sensors).  The temperature rise depends on the laser power and exposure time, as well as its weight.  Use the Ophir sensor finder to determine if a particular sensor is right for you.  As a general guideline, your Ophir sensor shouldn't be allowed to get past 100° C.


The maximum temperature of the sensor should not ordinarily exceed 100 to 120degC

Laser Focusability (Gaussian Beam)

Starting Temperature

(°C) *


(W) *

Exposure Time

(s) *

Weight of Aluminum Sensor

(gm) *


Volume of Aluminum Sensor

(cm3) *

Empty Space in Sensor

(%) *