Kapteyn-Murnane Labs - Products Page

Cascade Laser

Specification:

Notes:

Pulse Duration

Sub-15fs

Wavelength Center

765-810nm

> 65nm FWHM

Bandwidth at ~800nm

>65nm FWHM guaranteed

>90nm FWHM typical

Minimum Bandwidth

~55nm FWHM

Cavity Dumped Energy

>30nJ

Standard Repetition Rates

40kHz, 80kHz, 200kHz, 400kHz, 800kHz, 2MHz

4MHz also possible at reduced energy and narrower bandwidth.

With cavity dumping off: 80.5MHz, ~4nJ

Repetition Rates with Option-1kHz

1kHz, 2kHz, 5kHz, 10kHz, 20kHz, 50kHz, 100kHz

With cavity dumping off: 80.5MHz, ~4nJ

Pulsewidth

Near transform limited

With external dispersion compensation

Pulse Intensity Jitter

<3% peak to peak (not rms)

Polarization

Horizontal ("p")

Spatial Mode

Near TEM00

Beam Divergence

<1 mrad

Beam Diameter (1/e²)

~1 mm at output

Active Cooling

Not necessary for ti:sapphire crystal

Lab Requirements

Temperature +/- 1.5 degrees C

Pump Laser:

Cascade

Requires user-provided: 5.0W CW of 532nm or Ar+

Cascade-M

SpectraPhysics 5W Millennia pump is integrated inside

Cascade-C

SpectraPhysics 5W Centennia pump is integrated inside

Footprint:

Cascade

83cm x 27cm x 14cm

Not including pump laser

Cascade-M or -C

83cm x 41cm x 14cm

Including integrated pump laser

Beam Height:

Cavity dumped out

82mm above optical table

Modelocked out

84mm above optical table

Pump input

84mm above optical table

Electrical:

Cascade Controller

100-240 VAC, 1 phase, 50/60Hz, 1.5A (43cmW x 36cm L x 9cm H, 5kg)

Oscillator Controller

100-240 VAC, 1 phase, 50/60Hz, 1.5A (43cmW x 36cm L x 9cm H, 5kg)

Cavity Dump Driver

100-240 VAC, 1 phase, 50/60Hz, 1.5A (49cmW x 25cm L x 9cm H, 6kg)

Centennia Pwr Sup

100-120, 200-240 VAC, 1 phase, 50/60Hz, 10A (35cmW x 45cm L x 15cm H, 9kg)

Centennia Chiller

115 VAC, 1 phase, 60Hz, 10 A (32cm W x 53cm L x 60cm H, 54kg) or:

100VAC, 1phase, 50Hz, 10A or: 230VAC, 1 phase, 50Hz, 5A.

Single-box, 15fs high energy Ti:sapphire lasers – Reaching >30nJ. KMLabs now offers the Cascade with an internally integrated SpectraPhysics Millennia.

KMLabs' Cascade-M and -C cavity-dumped femtosecond, Ti:sapphire lasers are now more turnkey, user-friendly, and professionally-packaged that ever before. Along with the internally integrated 5W, SpectraPhysics pump laser, these lasers also include an internally integrated spectrometer and power monitor, and newly improved motorization of the spectral and temporal control. This single-box system is a compact, 83cm wide x 41cm deep x 14cm high.

Spanning 1kHz to 2MHz, at >30nJ, and sub-15fs, these rugged laser sources have applications in spectroscopy, microscopy, terahertz, OCT, harmonic generation, continuum generation and more. Our compact, user-friendly and economical lasers offer flexibility with simplicity.

Cascade and Cascade-M and -C Features:

• 15fs to 20fs.
• Standard dumping rates: 40kHz, 80kHz, 200kHz, 400kHz, 800kHz, 2MHz – user-selectable in real time.
• Option-1kHz dumping rates: 1kHz, 2kHz, 5kHz, 10kHz, 20kHz, 50kHz, 100kHz – user-selectable in real time.
• Modelocked operation: 80.5MHz (with dumping electronics disabled.)
• Centered at 780nm to 800nm.
• >30nJ per pulse when cavity dumped or >3nJ in modelocked operation.

The Cascade can be operated in either the cavity-dumped mode, providing >30nJ at a range of repetition rates up to 2MHz, or the dumping may be electronically disabled, allowing 80.5MHz modelocked operation with >3nJ per pulse.

The Cascade is an excellent source for simple white light generation, achieved via fiber broadening. [click for picture]

Cascade Accessories:
• EPPR: Prism pair for extra-cavity dispersion compensation of the Cascade(and -M or -C).
• PER-R-532: Polarization rotating periscope for rugged pump delivery.
• PER-M-532: Polarization maintaining periscope for rugged pump delivery.
• PER-ENCL: Simple enclosure and beam tubing for the KMLabs periscope.

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