Quick Answer: The Semiconductor Laser is a compact, fully solid state Class 2 laser producing a 630 nm beam, with an adjustable collimator and a modulation facility for laser communications and speed of light investigations.
Last updated: October 2026
Key Features
630 nm beam, 0.9 mW nominal output, Class 2
Adjustable collimator for focusing and control of beam divergence
Built-in 1 MHz pulsed oscillator or external modulation
Mounts directly on a standard type optical bench
Runs from an internal PP3 battery or a smoothed, regulated supply
Rubber feet to aid stability
Technical Specifications
Specification
Value
Power output
0.9mW nominal, 1mW absolute maximum
Laser class
Class 2
Wavelength
630nm
Internal modulation
Pulsed at 1MHz, pulse width 0.1µs
External modulation
1V peak to peak max., 100Hz to 1MHz, 50Ω input impedance
Modulation input connectors
3.5mm jack sockets
Beam divergence
1 mrad approx. at optimum focus
Operating voltage
8 to 12V d.c.
Mass
400g
Dimensions
160mm x 65mm x 72mm overall, including collimator
About This Product
Modulation can come from the built-in oscillator or from an external analogue or digital signal source, allowing laser communication experiments and speed of light investigations; a Modulated Receiver Unit is available for these applications. Drawing 50 mA typical, the laser gives approximately 9 hours of operation from an alkaline PP3 battery. A Laser Accessory Set is available separately.
Frequently Asked Questions
Q1. Can it be mounted on an optical bench? Yes. It can be mounted directly on a standard type optical bench.
-165mm.jpg)
 (1).png)
.jpeg)
