TOPOL. Femtosecond Optical Parametric Oscillator

Ultrafast optical parametric laser oscillators offer broad tuning range in the near-IR range up to mid-IR wavelengths.
  TOPOL-1050-C TOPOL-1050-C-HP TOPOL-1050-D TOPOL-1050-E
Optical parametric oscillator specifications
Wavelength tuning range*
(fully automated USB tuning)
680-1000 nm (signal)
1100-2300 nm (idler, optional)
650-1000 nm (signal)
1100-2700 nm (idler, optional)
1700-2000 nm (signal)
2200-2740 nm (idler, optional)
1420-1700 nm (signal)
2750-4030 nm (idler, optional)
Average output optical power
(simultaneous outputs unless noted otherwise)
680 nm: >450 mW
690 nm: >600 mW
700 nm: >680 mW
750 nm: >830 mW
800 nm: >850 mW
850 nm: >870 mW
900 nm: >820 mW
950 nm: >670 mW
1000 nm: >530 mW

idler (optional)
1105 nm: >620 mW
1170 nm: >560 mW
1260 nm: >510 mW
1370 nm: >450 mW
1530 nm: >420 mW
1750 nm: >350 mW
1970 nm: >290 mW
2100 nm: >220 mW
2200 nm: >150 mW
2300 nm: >120 mW

1050+/-5 nm (fixed)**: >1.7 W
(>7 W switchable)

525+/-2 nm (fixed): >130 mW (>3 W switchable)

650 nm: >1900 mW
680 nm: >1920 mW
700 nm: >1950 mW
750 nm: >1850 mW
800 nm: >1800 mW
850 nm: >1720 mW
900 nm: >1660 mW
950 nm: >1400 mW
1000 nm: >1250 mW

idler (optional)
1105 nm: >1240 mW
1260 nm: >1250 mW
1370 nm: >1060 mW
1530 nm: >950 mW
1750 nm: >880 mW
1900 nm: >750 mW
2300 nm: >750 mW
2560 nm: >400 mW
2700 nm: >160 mW

1050+/-5 nm (fixed)**: >3 W
(>12 W switchable)

525+/-2 nm (fixed): >250 mW (>7 W switchable)

1700 nm: >400 mW
1800 nm: >800 mW
1900 nm: >600 mW
2000 nm: >650 mW

idler (optional)
2225 nm: >250 mW
2260 nm: >480 mW
2300 nm: >500 mW
2420 nm: >400 mW
2600 nm: >330 mW
2660 nm: >280 mW
2730: nm >170 mW

1050+/-5 nm (fixed)**: >1.5 W
(>4.5 W switchable)

1420 nm: >520 mW
1450 nm: >610 mW
1500 nm: >680 mW
1550 nm: >700 mW
1600 nm: >660 mW
1650 nm: >580 mW
1700 nm: >490 mW

idler (optional)
2750 nm: >180 mW
2890 nm: >220 mW
3050 nm: >270 mW
3250 nm: >300 mW
3500 nm: >280 mW
3810 nm: >250 mW
4030 nm: >200 mW

1050+/-5 nm (fixed)**: >1.5 W
(>4.5 W switchable)

Pulse duration (FWHM) <200 fs
(typical 140-180 fs depending on exact wavelength)
<200 fs
(typical 130-190 fs depending on exact wavelength)
<250 fs
(signal or idler)
<200 fs (1050 nm)
<250 fs (signal)
<300 fs (idler)
<200 fs (1050 nm)
Pulse repetition rate 80+/-5 MHz (fixed)
(WxLxH, laser head includes integrated pump laser and control electronics)
Laser head 1060x520x152 mm
930x530x176 mm 962x482x152 mm
Closed-loop stabilized
water-to-air chiller unit
443x484x176 mm (19’’ 4U)
Power supply and control unit specifications
Power supply single-phase; 100-240 V, 50/60 Hz, <1.5 kW
Control USB interface, integrated 650-1000 nm spectrometer (TOPOL-1050-C/-C-HP only);
Windows PC software is included; a PC is required (not included)
* - idler output is optional; signal and idler output tuning is interdependent; optional harmonic extensions are available down to 325 nm;
** - may be used to pump an additional TOPOL-1050-D or TOPOL-1050-E system

The TOPOL series of automated femtosecond optical parametric oscillators (OPOs) offers the widest wavelength tuning range among the entire product line of our company. The TOPOL series includes three models (1050-C, 1050-D and 1050-E), each providing simple and reliable management of the system parameters with the help of an advanced control software and, if combined, covering the spectral range of 680...4030 nm, with optional external SHG add-ons extending the range down to 340 nm and DFG modules for >4000 nm coverage.

Depending on the model, a TOPOL OPO can be pumped by either the fundamental (1050-D, 1050-E) or the second harmonic (1050-C) of a mode-locked femtosecond laser with the central wavelength of 1030-1060 nm and the pulse repetition rate of about 80 MHz. By default, all TOPOL OPOs are optimized for use with the TEMA-150 femtosecond ytterbium laser system, which allows achieving high average output power of about 1 W or even more at any wavelength within the three different tuning ranges spanning across the NIR and MIR spectral regions.
The main difference between the 1050-C, 1050-D and 1050-E is the wavelength tuning range specific to each model (refer to the Specifications chart for detailed information). All three OPOs provide two separate, simultaneously functioning outputs: the signal wave output and the idler wave output. Optional outputs are also available for depleted pump radiation (@ 1030 - 1060 nm), as well as its second harmonic (@ 515 - 530 nm), which can be used simultaneously with the main outputs. High-power switchable outputs of full pump radiation are also available in certain models.

The TOPOL-1050-C model features a built-in second harmonic generator module for pump radiation as well as a thermo-stabilized breadboard, which not only provides outstanding long-term stability of the output power, characteristic to 1050-D and 1050-E models, but also ensures high pump beam conversion efficiency over extended periods of time.

The TOPOL series OPO system includes a built-in microcontroller unit and an integrated spectrometer (-C model only) bundled together with a specially designed TOPOL Control Software (‘TCS’) for Windows, allowing the single-click approach to wavelength tuning of the OPO. Besides providing the wavelength tuning functionality, the TOPOL Control Software allows to:
- display the spectrum and CWL of the signal wave output measured by the built-in spectrometer in real time and save it’s spectrum to a file (-C model only), or display the calculated wavelengths based on factory calibration (-D and -E models);
- measure and display the real-time output power of the OPO;
- control optional signal and/or idler SHG extensions with the same software.

The TOPOL OPO grants its user convenient control over the parameters of the output radiation, providing high stability and repeatability of these parameters at the same time. Thanks to the robust design and high degree of automation, the TOPOL OPO allows the user to focus on the primary research task by minimizing the need for maintenance and manual adjustment of the OPO system itself.

- multichannel low-jitter synchronized systems based on a single 1030-nm seed oscillator (may add an arbitrary number of additional solid-state TETA amplifiers + OPA, or fiber-based YFOA or ANTAUS systems + OPA/OPO).
- external automated SHG extensions (for signal and/or idler), controlled by the main software;
- OG pulse picker units;
- AA-DD autocorrelator unit for total output specification control;
- additional 1050-nm pump laser output;
- additional 525-nm pump SH output (in TOPOL-1050-C);
- adaptation to other pump lasers (100-300 fs; 1030-1060 nm; PRR 50...100 MHz).

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