K2-ASOPS
Ideal tool for pump-probe measurements (ASOPS).
Low-repetition rate single-cavity dual-comb laser
- Two spatially separated pulse trains with up to 2 W per beam
- <200 fs pulse duration
- Sub-cycle relative timing jitter
- Ultra-low relative intensity noise
- Fundamental Gaussian beam mode output
- Tunable and long-term stable repetition rate difference
- Very compact system design
- 24/7 turn-key operation
DESCRIPTION
The system produces a pair of modelocked femtosecond lasers (optical frequency combs) with a slightly different pulse repetition rate. In the time domain, the optical delay is rapidly swept through a range of 12-20 nanoseconds at high speeds. In the frequency domain, beat notes between each pair of optical comb lines are generated via heterodyne detection.
Through a novel shared-cavity architecture, our system is able to achieve ultra-low noise simply in free-running operation. In particular, the laser pair is passively stable with highly correlated intensity, timing, and phase noise properties between the two combs. Since there is only one laser cavity and no high-speed locking electronics or optical amplification, most of the complexity of conventional dual-comb and ASOPS systems is removed, while providing a small footprint and superior performance.
OPTIONS
- Integrated second harmonic
- Integrated third harmonic
- Passive (air) or active (water) cooling
- Optical Isolation
- Other repetition rates
VIEW TECHNICAL SPECIFICATIONS
We strive to excel in performance. Specifications can change – please inquire for the latest model.
Laser specifications
| Power per comb | >1.6 W, 2W typical |
| Pulse duration | <200 fs, clean sech² pulses |
| Repetition rate | 60 MHz |
| Pulse energy | >25 nJ |
| Center wavelength | 1050 +/- 10 nm |
| Beam quality factor M2 | <1.1 |
| Individual comb RIN | <-160 dBc/Hz for frequencies from 200 kHz |
Dual comb specifications
| Repetition rate difference | tunable between 100 Hz – 1200 Hz |
| Relative timing noise | sub-10 fs for >1 kHz |
Available outputs
| Optical | Two spatially separated pulse trains |
| Cross-correlation signal | Trigger signal at the repetition rate difference |
Controls
| Repetition rate difference | Digital (analog on request) |
| Repetition rate | Fixed |
| Power | Power allocation between fundamental and SHG (SHG option only) |
Physical dimensions
| Laser head (L x W x H) | 494 x 291 x 179 mm3 |
| Beam output height | 75 mm on (W) side |
| K2-Link Control Unit (L x W x H) | 395 x 436 x 88.05 mm3 (2U 19″ rack unit) |
| Cabling | 3 m between control box and laser head |
Requirements
| Operating temperature | 15 -30 ºC |
| Relative humidity | <70% (non-condensing) |
| Electrical requirements | 100-120 VAC, 3 A, 50-60 Hz / 200-240 VAC, 1.5 A, 50-60 Hz |
| Rated power | 300 W |
