K2-1000

Ideal tool for dual-comb spectroscopy and ranging.

1 GHz single-cavity dual-comb laser
  • Two spatially separated pulse trains with >2 W per beam
  • <110 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
  • Compact system design
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 1 nanosecond at very high speeds. In the frequency domain, beat notes between each pair of optical comb lines are generated via heterodyne detection. Due to the gigahertz repetition rate, high power per comb line is obtained.

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
  • Second harmonic generation
  • Wavelength conversion via optical parametric oscillator
  • Passive air or water cooling
  • Low power and fiber coupled configurations
  • Vibration and acoustic noise isolation
  • Optical isolation
  • Other repetition rates (please inquire)
APPLICATIONS

Pump-probe
sampling

Thick-film
inspection

Gas sensing and
process control

Precision
ranging

We strive to excel in performance. Specifications can change – please inquire for the latest model.

Laser specifications

Power per comb >2.0 W
Pulse duration <110 fs, clean sech2 pulses
Repetition rate 1 GHz
Pulse energy >2 nJ
Center wavelength 1050 +/- 10 nm
Beam quality factor M2 <1.1
Beam ellipticity <10 %
Individual comb RIN <-160 dBc/Hz for frequencies >1 MHz

Dual comb specifications

Repetition rate difference tunable between 0 – 200 kHz
Relative timing noise <10 fs [1 kHz, 100 kHz]

Available outputs

Optical Two spatially separated pulse trains
Cross-correlation signal Trigger signal at the repetition rate difference
Digital signals Δfrep/frep value with better than 10-6 precision

Controls

Repetition rate difference Active Δfrep/frep stabilization at Δfrep rate up to 25 kHz, above free-running
Repetition rate Fixed (digital or analog on request)
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 mm(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

Let's explore the most innovative possibilities of laser technology.

Contacts

info@k2photonics.com
+41 43 883 32 43

K2 Photonics AG
Hardturmstrasse 161
8005 Zurich
Switzerland

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