The Spirit-OPA® is an automated collinear optical parametric amplifier (OPA) specifically built and optimized for the Spirit® ultrafast laser. The turn-key, high repetition rate Spirit femtosecond laser combines with the widely tunable Spirit-OPA family to create a powerful, user-friendly tunable source for high repetition rate ultrafast spectroscopy.
|Tuning Range||Conversion Efficiency2,3|
|630–1020 nm (signal)
1040–2600 nm (idler)
|>12% at peak (signal and idler combined)|
|315–510 nm (SH of signal)||>2.4% at peak|
|520–630 nm (SH of idler)|
|210–255 nm (FH of signal)||>0.6% at peak||NA|
|260–315 nm (FH of idler)|
|210-315 nm (TH of signal)||NA||>0.8% at peak|
|2200–4200 nm (DFG1)||>3% at 3000 nm|
|4000–16000 nm (DFG2)||>0.2% at 10000 nm|
|Wavelength||1030 nm or 1040 nm|
|Pulse Energy5||20 µJ–120 µJ|
|Average Power||Up to 8 W||Up to 30 W|
|Pump Pulse Width||350 fs|
The Spirit-OPA includes a built-in second harmonic generator to convert the Spirit IR output into a 520 nm pump beam for the OPA, which then generates signal and idler in the red-infrared range (630–2600 nm). To further enhance its wavelength tuning capabilities, the OPA can be equipped with an optional harmonics module. The result is straightforward access to a broad, gap-free wavelength range from UV to the mid IR (210 nm – 16 μm).
The Spirit-OPA family can be factory optimized for a wide range of pump pulse energies (up to 120 μJ). This versatility allows for multiple configurations such as pumping a single OPA for maximum output energy or simultaneously pumping two or more OPAs for multi-beam, multi-color time resolved experiments. There are two Spirit-OPA versions available: The Spirit-OPA-8 which can be pumped with up to 8 W and the Spirit-OPA-30 which is specifically optimized for high power applications (up to 30 W pump power).