Our narrow linewidth cw lasers are constructed with no moving parts or piezos and with very short laser cavities. This unique combination of non-mechanical and short cavity lengths provides lasers that are uniquely immune to vibrations.  Furthermore, the short cavity means a large free-spectral range.  This means that unlike conventional external cavity diode lasers our lasers can be injection current tuned over many GHz.  This enables high speed frequency agility and very fast servo control for locking.  Since the servo feedback can be both fast (many MHz which is much greater than acoustic frequencies) and long range (many GHz of injection current tuning) the locks may be especially robust against acoustic or vibration challenges.