“ORPHEUS-N” is a non-collinear optical parametric amplifier (NOPA) pumped by the “PHAROS” laser system. “ORPHEUS-N” with second harmonic pump delivers pulses of less than 25fs in 700-850nm range with average power of more than 500mW at 750nm (pumped with 6W @1030nm, 200kHz).
“ORPHEUS-N” with third harmonic pump delivers pulses of less than 25 fs in 525-700nm range with average power of more than 100mW at 600nm (pumped with 6W @1030nm, 200kHz). In both models the generator of appropriate pump pulse – the second or the third harmonic is integrated in the same housing.
“ORPHEUS-N” works at repetition rates of up to 1 MHz. The device is equipped with computer controlled stepping motor stages, allowing automatic tuning of the output wavelength. An optional signal second harmonic generator is available extending the tuning range down to 250-450 nm.
“ORPHEUS-N” is an invaluable instrument for time-resolved spectroscopy. Several ORPHEUS and ORPHEUS-N systems can be pumped with a single “PHAROS” providing at least two pump/probe channels with independent wavelength tuning.
- Pulse duration down to 15 fs
- High repetition rates of up to 1 MHz
- Several devices can be pumped by a single “Pharos” laser system
- Computer controlled wavelength tuning
- Excellent Time-Bandwidth Product (TBP) values
- Spectral bandwidth and pulse duration control
- Built in pulse compressor.
- Optional built in second harmonic generator of signal pulses
The principle of operation of “ORPHEUS-N” is based on non-collinear parametric amplification of white-light continuum in a nonlinear crystal. The non-collinear amplifier is pumped by either the 2nd or 3rd harmonic of “Pharos” produced by built-in harmonics generator. A small fraction of the incoming 1030 nm pulse is used to produce white-light continuum. The continuum pulse (the seed) is sent into a negative dispersion pulse shaper based on the proven design of over 50 TOPAS-White systems installed world-wide. This negatively chirped seed pulses are then amplified in two amplification stages, and compressed using a pair of fused silica wedges.