A number of applications like high precision ranging and imaging, LIDAR, micro-materials processing, UV spectroscopy in chemistry and biochemistry will benefit from energetic (300-500uJ) high beam quality sub-nanosecond (~200ps) laser pulses. To address the needs of these applications the new MOPA microlasers from STANDA utilize Master Oscillator Power Amplifier platform that combines company's renowned microlaser oscillators together with a highly efficient amplifying stage developed recently. Due to the MOPA configuration the unique spatial and temporal characteristics of the microlasers are preserved while their output power is raised to the multiwatt level. All Master Oscillators as well as Power Amplifiers are produced at Standa facilities.
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We value user working space and always try to fit into the tightest environment of a laboratory set up, measuring device or other equipment. The MOPA series continues the traditions of STA-01 microlasers: being the smallest passively Q-switched DPSS laser on the market without compromise to optical performance. Fiber-coupled pump diodes are housed inside the electronic controller greatly reducing heat load and footprint of the laser head. Pump radiation is delivered via 2m long metal-shielded fiber optic cables enabling convenient integration of the laser system into the user equipment. Due to the high pump and output powers the optimized air cooling or water cooling of laser head is required.
Without compromising their compactness and beam quality the STA-01-MOPA-TH STA‑01‑MOPA series lasers can be equipped with second and third harmonic generation crystals for nonlinear frequency conversion. STANDA can offer green and UV lasers with 532 and 355 nm wavelengths accordingly.
Due to the MOPA configuration different modifications of output parameters are possible. Contact us or find your local Standa if you have laser specification other than given in the table of standard units.
Applications • Marking • Electronics (PCB Processing) • Biomedical • Instrumentation • LIDAR and Laser Ranging • Sensing and Monitoring • Micro dissection • Semiconductor Inspection • Material processing • MALDI-TOF • TiSa, OPO pumping • Laser Induced Fluorescence (LIF) • Spectroscopy (LIBS, LIPS and PIV) • Micromachining • Nonlinear Optics (Harmonics and Supercontinuum Generation) • Diamond drilling (SiC) and other hard materials1 - Is specified an ambient temperature at which the laser parameters exactly meet the specifications in the table.
Pulse duration of a particular model is factory set to a fixed value from the given range. Contact your Standa representative or Standa directly for more details.
Content and specification are subjects to change without notice.
The Superlum MOPA-SLD-850 is an ultra-high power SLD-based light source that features both high power levels (tens milliwatts) and an extremely weak sensitivity to optical feedback. This is achieved using a special optical scheme called MOPA (Master Oscillator Power Amplifier). A simplified block diagram of the MOPA scheme is shown in the figure below. A medium-power SLD operating as a master source provides an optical power of 6 – 10 mW with a relatively broad spectrum of 10 – 20 nm centered at 850 nm. After passing through an appropriate optical isolator with an isolation of better than −25 dB, the power is elevated to a high level of 100 mW by a spectrally matched Semiconductor Optical Amplifier (SOA). The key advantage of such an optical configuration is its weak sensitivity to optical feedback, because the input power of 6 – 10 mW makes it possible for the SOA to reach a deep saturation level. In this situation, there is no need to install an optical isolator at the output of the SOA for protection from optical feedback. In addition, this allows eliminating any unwanted power drop related to insertion loss inside the isolator, which frequently reaches 2 dB. Another advantage of the MOPA scheme is that it uses only the polarization maintaining optical fiber — no SM-fiber coupled components are utilized. Most of the fiber-optic components are built on the fast-axis-blocked technology that guarantees high values of the PER (Polarization Extinction Ratio) at the MOPA output (> 18 dB).
Block Diagram of the MOPA Optical Scheme (Simplified).For more details, please refer to Superlum application note "Boosting of SLD Power. Feedback-Insensitive, Ultra-High-Power MOPA SLD Sources".
The MOPA system is offered in a compact metal case which can be used on a lab bench or in a rack. The instrument consists of a modular mainframe and several plug-in modules (power supplies, optical unit, current and temperature controllers, CPU etc.). Each MOPA system is equipped with a high-precision PM FC/APC optical socket for easy coupling of 2.0-mm narrow-key connectors. The device is supplied with a 1 m PM optical patch cable (other lengths are available upon request).
The Superlum drive electronics includes two independent, high-precision, low-noise, constant-power current & temperature control drivers. The electronics provides safe current and temperature operation of the master SLD and the SOA. All the necessary SLD protective measures are implemented. Among the measures, the most important ones are the soft start, turn-on transient suppression, overtemperature protection, open-circuit protection and pumping current limit.
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The MOPA-SLD-850 can be operated locally from the front panel, or remotely from a computer with an RS-232 port. It contains minimum front-panel features needed for operation. No adjustments are required to run the device because it is completely pre-set at the factory. The rear panel of the instrument has a digital input to allow the drive current of the SOA to be pulse modulated (switched on or off). The maximum frequency of modulation is 50 kHz.
The device includes a linear power supply capable to operate from 220 VAC or 110 VAC. The required value of the line voltage is pre-set at the factory and should be specified by the customer when placing the order.
SLD-based light sources are excellent high-power speckle-free broadband light sources with a great potential for using in many practical applications such as OCT (Optical Coherence Tomography) Imaging Systems, FOG (Fiber Optic Gyroscopes), optical spectroscopy and the others.
For added safety, the system is designed to meet the laser safety requirements for class 3B laser products. Accordingly, the instrument incorporates the laser safety measures specified in IEC 60825-1 Ed. 2 2007-03, namely: the master key control, remote interlock connection, visual/audible alarm, information and warning stickers etc.
Information and warning labels as specified in IEC 60825-1 Ed. 3 2014-05.
Superlum offers product customization services. A number of the operating characteristics of the product (e.g. the output power level, spectral characteristics etc.) are available for modification according to your specific needs.
Please contact us for further discussion of your requirements.
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