PT200 series Picosecond Tunable Lasers
PT200 series lasers integrates picosecond optical parametric oscillator and picosecond DPSS pump laser into single compact housing. Picosecond tunable lasers features 690-3400 nm tuning range, 5 ps pulse duration, nearly Fourier transform-limited linewidth and up to 88 Mhz repetition rate. Megahertz pulse repetition rate is optimal for using photon-counting detection technique in numerous nonlinear spectroscopy and microscopy applications.
Features
- 690-3400 nm tuning range
- Optional tuning range extension to UV
- Nearly Fourier transform-limited linewidth
- Nearly diffraction limited divergence
- Up to 5 kW pulse peak power
- Collinear output of two tunable wavelengths for CARS applications (optional)
- Output wavelength monitoring(optional)
- PC control via RS232 and LabView™ drivers
Applications
- CARS microscopy and spectroscopy
- Two-photon fluorescence microscopy
- Second harmonic generation microscopy
- Laser induced fluorescence microscopy
- Infrared spectroscopy
PT200 series lasers integrates picosecond optical parametric oscillator and DPSS pump laser into single compact housing. Mounting all the components into one frame is not only cost-effective, but also improves long-term stability of the laser output power and thus reduces running and the maintenance costs.
Megahertz pulse repetition rate is optimal for using photon-counting detection technique in numerous nonlinear spectroscopy and microscopy applications.
PT257 and PT259 are ideal coherent light sources for CARS, two photon fluorescence applications. Difference frequency of signal and idler wavelength covers Raman shift range down to 1000 cm-1. Tuning range of PT259 model can be extended to UV range by optional second harmonic generator. PT277 model produces approx. 0.5 W power in mid-IR range from 2.5 to 3.4 μm with nearly Fourier transform limited linewidth. Applications include infrared spectroscopy and vibrational spectroscopy on the surfaces.
All models produce nearly diffraction limited divergence beams, with M2 factor measured to stay as low as 1.3 in whole tuning range.
The wavelength tuning is fully automatic and is controlled by build-in microprocessor. The wavelength controlling elements are mounted on precise stepper motors operating in microstepping mode. The temperature of non-linear crystal is controlled by precise thermocontroller based on bidirectional Peltier element, resulting in fast tuning of temperature whether by cooling or by heating the crystal.
The lasers may be controlled from the remote keypad or through RS232 interface from personal computer using LabView drivers.