- How do I place an order for a fast steering mirror ?
- When is a metal mirror preferable to a glass
- Why use a digital instead of an analog fast
steering mirror controller ?
- Can I use a beam stabilizer on a pulsed laser?
- Can I scan the mirror full amplitude
at the specified bandwidth?
- How long can the mirror head to controller cable be without
Email us or call us and we will send you a quote for the product you are
interested in. Then you can send us a purchase order. We will bill
you after the product ships. Our terms are NET 30. We do not accept
Metal mirrors can be larger with lower inertia than a comparable glass
mirror. Aluminum is used for a low cost approach and Beryllium is used for
the best performance.
Our 3" mirror has an aluminum mirror substrate which is replicated for a
1/4th wave peak to valley flatness. The replication process is similar to
the process used to make gratings, however the master is an optical flat.
After replication the substrate is coated with either protected aluminum, gold
Modern DSP chips have made it possible to achieve the performance and
resolution of an analog controller with the added benefit of simpler performance
optimization. With a digital controller, the fast steering mirror can be
optimized for its given application.
Our standard fast steering mirrors come with analog controllers that
have user adjustable PID values. The user can easily adjust the controller
for the best response for his application. Currently we are developing a
digital controller for our standard products.
Our position detector has a bandwidth of 10KHz and laser pulses may cause
beam jitter at the laser modulation rate. Pulse rates above 10KHz should
not be a problem.
The 3dB bandwidth in the spec is only for very small amplitude motion.
We drive the mirror at 10mV to obtain the bandwidth. The maximum frequency
and amplitude of scan varies with mirror model. Our OIM101 1" FSM can scan
full amplitude (+/-1.5 deg) at around 60Hz.
How long can the mirror head to controller cable be without sacrificing
Cable length from the optical head to the controller of up to 35 feet can be
used with little to no decrease in mirror performance. We use differential
input instrumentation amplifier on the user input commands (x and y commands) so
if long cables are used, the drive signals should be differential to minimize