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TOPAS | PRIME

Collinear Optical Parametric Amplifier

TOPAS-PRIME is a collinear femtosecond optical parametric amplifier (OPA) designed for Ti:Sapphire lasers.

The standard TOPAS-PRIME collinear OPA model accepts pump pulse energy of up to 3.5 mJ @ 20 – 70 fs (up to 4 mJ @ 70 – 200 fs), while TOPAS-PRIME-PLUS accepts higher pump pulse energy, up to 6 mJ @ 70 – 200 fs. Both models come with wavelength extension options, covering a wavelength range from 189 nm to 20 μm.

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Light Conversion | TOPAS | PRIME

Features :

189 nm – 20 μm tuning range
Up to 6 mJ pump pulse energy
> 25% conversion efficiency
High output stability
CEP stabilization of Idler
Fresh pump channel for improved temporal and spatial properties of sum-frequency options

Specification Notes :

TOPAS-PRIME and TOPAS-PRIME-PLUS specifications are given for the following pump laser parameters:

800 nm wavelength
1 mJ pulse energy
1 kHz repetition rate
30 – 40 fs pulse duration (ULTRA-FAST (20-70 fs))
100 – 150 fs pulse duration (FAST (70-200 fs))
Gaussian beam

Note 1: Specifications depend on pump wavelength and pulse duration.

Note 2: TOPAS-PRIME output pulse energy scales linearly in 1 – 5 mJ range (ULTRA-FAST (20-70 fs)) / 1 – 6 mJ range (FAST (70-200 fs)), provided the device is installed and optimized for particular pump energy. The device has to be re-optimized if the pump energy changes more than 10% from the installation value.

Pump Laser Requirements for ULTRA-FAST (20-70 fs) & FAST (70-200 fs):

Model	TOPAS‑PRIME	TOPAS‑PRIME‑PLUS
Pump wavelength	770 – 830 nm
Pump pulse duration (FWHM)
ULTRA-FAST (20-70 fs)	20 – 70 fs
FAST (70-200 fs)	70 – 200 fs
Pump pulse energy
ULTRA-FAST (20-70 fs)	0.15 – 3.5 mJ	0.15 – 5 mJ
FAST (70-200 fs)	0.15 – 4 mJ	0.15 – 6 mJ
Repetition rate	< 25 kHz *(1)
Maximum pump power	25 W *(2)
Polarization	Horizontal
Spectral bandwidth	< 1.2× transform limit
Pulse-to-pulse energy stability	< 1 % RMS deviation *(3)
Pulse duration stability	< 1 % pulse-to-pulse *(4)
Pulse front tilt	< 10% of pulse duration
Pulse contrast	< 1 : 20
Beam quality (M²)	< 1.3 *(5)
Beam astigmatism	< 0.15 *(6)
Beam spatial profile	Gaussian – Super Gaussian
Intensity modulation	< 15%, no hotspots *(7)
Beam pointing stability	< 10 μrad *(8)
Beam divergence	< 1.2× diffraction limit
Beam height from optical table	125 – 185 mm
Beam diameter (1/e²)	< 11 mm *(9)

*Maximum repetition rate for DFG1 (NDFG1) option is 1 kHz.
*Higher pump power options available.
*Normalized to average pulse energy, NRMSD.
*Normalized to average pulse duration, NRMSD.
*M2 specification valid for Gaussian beam.
*Normalized astigmatism – difference of the waist positions, divided by Rayleigh length.
*Normalized to Gaussian or Super-Gaussian fits, NRMSD.
*NRMSD, full angle.
*Optional external telescope can be ordered for the beam diameter of 11 – 28 mm.

Brochures & Datasheets :

TOPAS Optical Parametric Amplifiers for Ti:Sapphire Lasers (pdf / English)