Quasi-CW Thulium Laser

IPG Photonics has expanded its quasi continuous wave (QCW) fiber laser series to longer wavelengths. TLM-50/500-QCW Thulium quasi-cw fiber laser provides up to 5 mJ per millisecond pulses at ~ 2 microns. This compact energy efficient and reliable laser is designed for integration into medical devices for surgical procedures using open, laparoscopic and endoscopic inclusion, excision, resection, ablation, vaporization, coagulation and hemostasis of soft tissue in urology, urinary lithotripsy and general surgery. Dual wavelength 2.1 and 1.94 micron models are available upon request.



Wavelength  1940 nm Peak Power 500 W
Pulse Energy up to 5 mJ Pulse Duration 0.2  - 10 ms
Wavelength*, nm 1940** typ. 1880 min., 2100 max.
Emission Bandwidth FWHM, nm < 10
Mode of Operation CW or Pulsed
Pulse Repetition Rate, Hz single pulse - 100
Maximum Average Power, W 50
Maximum Peak Power, W 500
Maximum Pulse Energy, J 5 @ 10 ms
Pulse Duration, ms 0.2 - 10
Power Tunability, % 10 - 100
Power Stability***, % ± 2.5
Output Fiber Core Diameter, μm 100 typ.
Fiber NA 0.22

* Other wavelengths in the specified range are available upon request.

** Dual wavelength modules are available upon request. Please contact your IPG Representative. 

*** Over 1 hour

Pilot Beam Wavelength, nm


Pilot Beam Power, mW

< 5

Dimensions (W × D × H), mm

336 × 435 × 148

Weight, kg

< 25

Power Consumption, W

< 600



TLM-50-500-QCW Datasheet


Open and Endoscopic Surgery in Urology
Lithotripsy and Percutaneous Urinary Lithotripsy
General Surgery
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