The RADIANT tunable laser series utilizes optical parametric oscillator technology to generate wavelengths over a broad range in the UV, VIS and IR. Integration of system components into one compact unit increases ruggedness, minimizes misalignment and allows the user to reposition the system. Included verification hardware enables the user to confirm that beam paths are preserved after shipment or relocation. Hermetically sealed modules protect sensitive optical materials from the environment. All tunable beams exit the system from the same port resulting in one beam path to the end-user’s application. Wavelength tuning is hands-free and PC controlled.

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Wavelength Range [nm]:

410 – 2500

Peak OPO Energy [mJ]:

40 (70)

Spectral Linewidth [cm-1]:

4 – 6 (OPO) ; 6 – 9 (UV)

Beam Divergence [mrad]:

< 1.5 (Signal, FWHM)

Linear Polarization:

Horizontal (Signal); Vertical (Idler)

UV Tuning [nm]:

210 – 410 ; 192 – 410

Residual Pump Energy [mJ]:

25 – 45 (50 – 80)

Dimensions [in (mm)]:

27.5 (699) x 16.5 (419) x 11.0 (279)

Pump Wavelength [nm]:


Repetition Rate [Hz]:


Pulse Length [ns]:


Beam Diameter [mm]:

6.5 or 9

Trigger Connections:


PSU Dimensions [in(mm)]:

20 (508) x 11.1 (282) x 20 (508)

PSU Cooling:

Closed-loop air-water cooled

Build Your Product
Option 1 Group

Energy Level

The RADIANT can be configured for three energy levels, as presented in the tuning graphs. Select the desired configuration based on the graph. The outside dimensions are identical.

Option 2 Group

Access to Pump Laser Wavelengths

Optional access to the full power of the pump laser fundamental (1064 nm), the second harmonic (532 nm) and the third harmonic (355 nm) is available. Mounted optics that can be installed by the user (no alignment required), which reflect the desired beams through added ports are provided. The 1064nm beam exits from the front whereas the 532 nm and 355 nm beam exit through ports on the side of the system. Access to the residual 1064nm and 532nm beams is also available (355 nm residual already included). In this configuration the beams exit from a port on the side and can be used simultaneously with the OPO.

Option 3 Group

Wavelength Tunable UV Modules

The tuning range of the OPO can be extended into the UV by doubling the OPO Signal or mixing it with the pump laser wavelength or its harmonics. The UV option consists of a single module that is configured to generate the UV wavelengths that were specified by the user. The UV beam is separated from other wavelengths in the beams path (pump, harmonics, and OPO) by optics that are mounted on a computer controlled motorized stage. The position of these optics changes automatically depending on the desired output wavelength. The modular design allows the end-user to remove and replace the UV module in order to access full power OPO pulse energy. The module can be replaced with no need for alignment. All tunable beams, OPO and UV, exit the system from the same location resulting in one beam path to the end-user’s application.

Option 4 Group

Fourth or Fifth Harmonic Generator Extension

Fourth or fifth harmonic modules can be integrated with the system to generate 266 or 213 nm (respectively) high energy laser beam. The harmonic module, including steering and wavelength separation optics are mounted on an extension attached to the side of the Radiant housing and add 5.2 in (12.7 cm) to the width of the system.

Option 5 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. Systems with UV tuning options require removal of the UV module to install the end-user insertable MVA option and vice versa. Placement of the attenuator results in about 10% optical loss. If needed the MVA can also be removed for full energy access and reinstalled without need for alignment.

Option 6 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 7 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.

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