Phocus OEM

The Phocus™ OEM is the newest addition to the Phocus™ family line of products, specifically designed for Photoacoustic applications. The Phocus™ OEM is a mobile unit that incorporates all the system components in an extremely small and robust package, measuring 22x24x14”. The system includes the pump laser, the power supply and cooling unit, all the optics and the OPO. The ring oscillator OPO generates peak energy of more than 50 mJ at 20 Hz. The entire system is computer controlled, including phase matching of the harmonic. Access to the laser wavelengths at 1064 and 532 nm is available. Fast-Tuning™, in which the output wavelength can be tuned to any wavelength within the range at every consecutive pulse, is available.

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Wavelength Range [nm]:

690-950

Peak OPO Energy [mJ]:

50

Spectral Linewidth [cm-1]:

30-80

Beam Divergence [mrad]:

Fiber Bundle Delivery

Linear Polarization:

NA

UV Tuning [nm]:

NA

Residual Pump Energy [mJ]:

optional

Dimensions [in (mm)]:

23.5 (597) x 13.5 (343) x 22 (559)

Pump Wavelength [nm]:

532

Repetition Rate [Hz]:

20

Pulse Length [ns]:

6

Beam Diameter [mm]:

Fiber Bundle Delivery

Trigger Connections:

FL IN, FL OUT, QSW IN, QSW OUT

PSU Dimensions [in(mm)]:

Integrated

PSU Cooling:

Closed-loop air-water cooled

Build Your Product
Option 1 Group

Access to pump laser wavelengths

Select choice of pump laser wavelengths for residual power access. Residual pump laser wavelengths exit the system from front, interlocked apertures simultaneous with OPO laser light. Fiber bundle delivery of pump laser wavelengths includes an attenuator (if applicable) to set the pump energy to safe operating limits. The amount of residual pump laser wavelength energy varies depending on the harmonic or OPO conversion efficiency.

Option 2 Group

Fast Tuning

This option (patent pending) enables fast switching of the output wavelength such that each consecutive pulse can be set to any wavelength within the wavelength range of the system. The user can enter a sequence of wavelengths into the control software, with any step size (zero to full range) in any order, and the system will generate these wavelengths pulse after pulse. It can be set to stop after a single sequence or to repeat the sequence as defined by the end-user.

Option 4 Group

Real-time Wavelength Monitoring and Auto Harmonic Optimization

The option includes a built-in wavemeter combined with motorized harmonics. The wavemeter provides real time measurement of the OPO wavelength, which is displayed in the control software screen. The option allows closed-loop tuning of the OPO , which provides better than 1 nm accuracy of the Signal wavelength. In addition, the wavemeter signal serves as a feed-back reference, which can be used to optimize the phase-matching of the harmonics.  Complete automation of phase matching simplifies the procedure to a single click through the Harmonics Auto-optimization software command (included).

Option 6 Group

Software Development Kit

Software Development Kit (SDK) that allows end-users to integrate system control functions into third-party software can be downloaded for no charge. The SDK works under most Windows-based programming environments and provided with limited technical support.

Option 5 Group

Real-time Energy Monitoring

The output energy of the OPO can be measured and displayed on the control software screen in real time. The measured pulse-pulse energy is digitized and available for data normalization, therefore significantly reducing the effects of pulse to pulse OPO variations on image creation. In place of the Wavemeter kit, the option can include motorized harmonics that replaces the default manual control mechanism for harmonic phase matching optimization. Combined with the Powermeter signal as a feedback mechanism, complete automation of phase matching simplifies the procedure to a single button click through the Harmonics Auto-optimization software command.

Option 3 Group

Motorized Variable Attenuator

Vary the OPO pulse energy by choosing the Motorized Variable Attenuator (MVA) option. By default the end-user changes the OPO pulse energy by changing the pump laser pulse energy through software command. However, OPO pulse-pulse energy instability increases at lower pump laser energy levels. The MVA option involves maintaining the pump laser pulse energy at maximum and using optical attenuation to change the OPO pulse energy without compromising energy stability. The MVA option connects through the electronics unit for computer control. Placement of the attenuator by the factory results in about 10% optical loss and is not removeable.

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