Downloadable Media:

Halcyon Laser	Specifications	Notes
Pulse Duration	Sub-15fs	When centered between 780-810nm
	Sub-25fs	When centered between 750-840nm
Wavelength Center	750-840nm	Contact KML for <750nm or >840nm
Bandwidth at 800nm	>70nm FWHM guaranteed	Bandwidths >100nm FWHM available with Option-10fs
	>90nm FWHM typical
Avg. Power [Energy] Output at 90MHz	400-550mW [4.4-6.1nJ]	70nm FWHM, < 5.0W pump
	300-450mW [3.3-5.0nJ] typical	>70nm FWHM, < 5.0W pump
	For >30nJ/pulse, see KMLabs' CascadeT Cavity Dumped Laser
Repetition Rate	76MHz to 95MHz	Specified by user's master oscillator
Pulsewidth	Near transform limited	With external dispersion compensation
Polarization	Horizontal ("p")
Spatial Mode	Near TEM00
Beam Divergence	~1 mrad
Beam Diameter (1/e²)	~1 mm at output
Reference Signal	Between 2,500MHz to 3,000MHz	User-supplied harmonic of rep rate
Jitter	Less than 200fs RMS	Assuming clean reference R.F. source
Spectral Control	Manual or Motorized	Both options included
Cooling	Cooling the crystal is not necessary
Pump Laser	Requires user-provided: 5.0W CW of 532nm or Ar+
Footprint	93cm x 29cm x 14cm	Not including pump laser

KMLabs announces the highest pulse energies produced by a commercially-available, phase stabilized femtosecond laser amplifier.

 

 

Phase stabilized amplifier systems are being increasingly used for numerous phase sensitive experiments that require ultrashort pulses and very high peak powers. Such experiments include, for example, the control of strong-field processes in extreme nonlinear optics and high harmonic attosecond pulse generation.

Recent carrier-envelope phase stabilization of a KMLabs Dragon femtosecond laser amplifier using Menlo Systems' femtosecond phase stabilization units for laser oscillators (XPS800) and laser amplifiers (APS800) demonstrated sub-30 fs phase stabilized pulses with energies of up to 2 mJ at up to 4 kHz repetition rate. These record-breaking results were demonstrated in a customer's lab, as well as at KMLabs' factory.

KMLabs has performed extensive studies of the long term, as well as shot-to-shot CEP stability, providing a rigorous stability analysis. Please open the pdf document: "CEP stabilized Dragon Data," located to the left, for more detailed results and discussion of CEP stabilized, high power amplifiers.

KMLabs is now scaling up the achievable phase stabilized average powers, with phase stabilized amplifier systems of 14mJ at 1kHz, 3 mJ at 10 kHz, and 1 mJ at 20 kHz currently in manufacturing. At the same time, we are working on continual improvements to reduce the phase noise. Please contact us for details.

 

Repetition Rate Stabilization:

Halcyon ti:sapphire laser oscillator:

This version of the KMLabs femtosecond oscillator includes the electronics, optics, vibration control & feedback-controlled temperature to stabilize the repetition rate to a pre-specified value in the range of 76-95MHz, that is an integer sub-multiple of a low phase jitter R.F. reference signal between 2500 and 3000MHz. Jitter of less than 200fs RMS is guaranteed provided a suitable (clean) reference R.F. source.

Customer tests have shown sub-50fs jitter when using a carefully prepared RF source.