K2 Photonics · K2-ASOPS
Asynchronous optical sampling from a single cavity
One cavity produces two modelocked femtosecond pulse trains with a small difference in repetition rate. That difference sweeps the delay between pump and probe automatically, so the delay axis is scanned electronically instead of mechanically — with passive noise correlation and no active locking or amplification.
Why it replaces a delay stage
~20 ns of delay
A 60 MHz single-cavity ASOPS laser scans up to roughly 20 ns of optical delay at high speed.
Robust
Nothing to translate, so nothing to wear, misalign or limit the scan rate.
Passive correlation
Shared cavity means correlated noise without an active lock.
What that changes in the lab
- Long delays that a mechanical stage covers slowly are swept continuously and fast.
- Averaging becomes practical, because a full delay scan takes a fraction of the time.
- The setup shrinks: no stage, no retroreflector path, no high-speed locking electronics.
- Alignment drift over a long scan stops being the dominant systematic error.
Typical measurements
Transient absorption
Time-resolved spectroscopy of carriers and excited states.
Learn moreTHz time-domain
THz-TDS without a mechanical delay line.
Learn moreUltrafast materials
Photophysics and carrier dynamics in materials science.
Datasheet
Get the K2-ASOPS datasheet
Repetition rate, rep-rate offset, delay range and noise performance for your measurement.
Replacing a delay stage?
Tell us the delay range and the time resolution you need today, and what your current scan costs you in wall-clock time.