CRONUS-2P Three-Channel Tunable Laser

Three-Channel Wavelength-Tunable Femtosecond Laser

CRONUS-2P Three-Channel Tunable Femtosecond Laser

Watt-level output at high repetition rate for fast imaging
Two tunable and one fixed output for simultaneous multibeam excitation
Automated GDD control for shortest pulses at the sample
Industrial-grade design for high power and beam stability

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CRONUS-2P is a three-channel tunable femtosecond laser providing watt-level, synchronized outputs with high repetition rates, short pulse durations, and GDD control, making it the ultimate source for nonlinear microscopy. In its standard configuration, the two independently tunable outputs, which can operate separately or simultaneously, cover 680 – 960 nm and 940 – 1300 nm, respectively. The third output, fixed at 1025 nm, is accessible in parallel.

Due to this versatility, CRONUS-2P can be applied for the simultaneous excitation of multiple fluorescent probes, calcium indicators, or opsins at their absorption maxima. Additionally, second- and third‑harmonic emission (SHG and THG) can be spectrally shifted for easier detection or resonant enhancement.

The two tunable and simultaneous channels also enable advanced coherent anti-Stokes and stimulated Raman scattering (CARS and SRS) applications with dual-band imaging, a broader selection of vibrational resonance frequencies, constant-difference dual‑beam tuning, and resonant enhancement.

CRONUS-2P configurations:

Standard: 680 – 960 nm (tunable), 940 – 1300 nm (tunable), and 1025 nm (fixed)
Dual output A: 680 – 960 nm (tunable), 680 – 960 nm (tunable), and 1025 nm (fixed)
Dual output B: 940 – 1300 nm (tunable), 940 – 1300 nm (tunable), and 1025 nm (fixed)

Specifications


	Output A	Output B	Output C
Tuning range ¹⁾	680 – 960 nm	940 – 1300 nm	1025 ± 10 (fixed)
Output power ²⁾ ³⁾	> 3 W @ 920 nm	> 2.5 W @ 1100 nm	> 2.5 W
Pulse duration ⁴⁾ ⁵⁾	< 160 fs	< 160 fs	< 160 fs
Pulse duration ⁴⁾ ⁵⁾	< 160 fs
Repetition rate	77 ± 1 MHz	77 ± 1 MHz	77 ± 1 MHz
Repetition rate	77 ± 1 MHz
Beam quality, M² ³⁾ ⁴⁾	< 1.2	< 1.2	< 1.2
Beam quality, M² ³⁾ ⁴⁾	< 1.2
Polarization	Linear, horizontal	Linear, horizontal	Linear, horizontal
Polarization	Linear, horizontal
Beam divergence, full angle	< 1 mrad	< 1 mrad	< 1.5 mrad
Beam divergence, full angle	< 1 mrad		< 1.5 mrad
Beam diameter ⁴⁾ (1/e²)	3.0 ± 0.4 mm	3.2 ± 0.4 mm	2.8 ± 0.4 mm
Beam ellipticity ⁴⁾	> 0.8	> 0.8	> 0.8
Beam ellipticity ⁴⁾	> 0.8
Beam astigmatism ⁴⁾	< 20%	< 20%	< 20%
Beam astigmatism ⁴⁾	< 20%
Beam pointing stability ⁶⁾	< 200 µrad	< 200 µrad	n/a
Beam pointing stability ⁶⁾	< 200 µrad		n/a
Long-term power stability ⁴⁾ ⁷⁾	< 1%	< 1%	< 1%
Long-term power stability ⁴⁾ ⁷⁾	< 1%
GDD control range	−10 000 to −35 000 fs² @ 700 nm −3 000 to −20 000 fs² @ 800 nm 0 to −10 000 fs² @ 920 nm	0 to −10 000 fs² @ 960 nm −3 000 to −10 000 fs² @ 1100 nm −8 000 to −12 000 fs² @ 1300 nm	n/a
Optional power control
Output power ⁸⁾	> 2 W @ 920 nm	> 2 W @ 1100 nm	> 1.5 W
Rise/fall time ⁹⁾	< 300 ns	< 300 ns	< 300 ns
Rise/fall time ⁹⁾	< 300 ns
Contrast ratio	1000:1	1000:1	1000:1
Contrast ratio	1000:1
GDD control range	0 to −6 500 fs² @ 920 nm	0 to −10 000 fs² @ 1100 nm	n/a
Optional wavelength extension (UV – VIS)
Second harmonic tuning range	340 – 480 nm ¹⁰⁾	480 – 650 nm ¹⁰⁾	n/a
Conversion efficiency at peak	30%	30%	n/a
Conversion efficiency at peak	30%		n/a
Environmental requirements
Altitude	< 2000 m	< 2000 m	< 2000 m
Altitude	< 2000 m
Temperature, operating	18 – 30 °C	18 – 30 °C	18 – 30 °C
Temperature, operating	18 – 30 °C
Temperature, storage	10 – 35 °C	10 – 35 °C	10 – 35 °C
Temperature, storage	10 – 35 °C
Relative humidity, operating	< 80% (non-condensing)	< 80% (non-condensing)	< 80% (non-condensing)
Relative humidity, operating	< 80% (non-condensing)
Dimensions
Laser head (L × W × H)	806 × 528 × 312 mm	806 × 528 × 312 mm	806 × 528 × 312 mm
Laser head (L × W × H)	806 × 528 × 312 mm
Power supply (L × W × H)	378 × 445 × 178 mm	378 × 445 × 178 mm	378 × 445 × 178 mm
Power supply (L × W × H)	378 × 445 × 178 mm
Chiller water-to-air (L × W × H)	400 × 430 × 265 mm	400 × 430 × 265 mm	400 × 430 × 265 mm
Chiller water-to-air (L × W × H)	400 × 430 × 265 mm
Chiller water-to-water (L × W × H)	400 × 430 × 220 mm	400 × 430 × 220 mm	400 × 430 × 220 mm
Chiller water-to-water (L × W × H)	400 × 430 × 220 mm


	Output A	Output B	Output C

Configuration with dual-output A or dual-output B is also available.
Simultaneous mode: > 1 W @ 920 nm, > 1 W @ 1100 nm, and > 2.5 W @ 1025 nm.
Power control using AOM is applicable, see the affected specifications below.
Specified at 920 nm, 1100 nm, and 1025 nm, respectively.
IR pulse duration determined assuming sech2 shape.
Beam pointing deviation over the entire tuning and GDD control range.
Expressed as normalized root mean squared deviation (NRMSD); with less than ±1 °C temperature change after 1 h warm up.
Simultaneous mode: > 0.7 W @ 920 nm, > 0.7 W @ 1100 nm, and > 1.5 W @ 1025 nm.
Specified from 5% to 95%.
Multiple second harmonic configurations are available. For more information contact sales@lightcon.com.