CL-SF and CLT-SF, 0.2-10 W

CL-SF and CLT-SF, 0.2-5 W

Single-frequency Cr:ZnSe/S CW Mid-IR Lasers

IPG Photonics offers single-frequency Cr:ZnSe/S continuous wave Mid-IR lasers. These lasers are offered as either fixed wavelength CL-SF or tunable CLT-SF models. The tunable range is from 1.9 to 2.6 μm, a fixed wavelength can be chosen in 1.9 - 3.0 μm range. Rapid tuning option is available. The lasers feature typical linewidth <1 MHz and TEM00 beam mode quality. The SF series Mid-IR lasers provide from up to 5 W output power. These lasers are pumped by IPG’s efficient and reliable erbium (1.6 micron) or thulium (1.9 micron) CW fiber lasers. Single-frequency Cr:ZnSe/S lasers are used in scientific and R&D applications such as high resolution spectroscopy, OPO pumping and free space communications.



Single Longitudinal Mode Typical Linewidth <1 MHz
Fixed Wavelengths in 1.9-3.0 μm range Output Power up to 5 W
Tunable Wavelengths within 1.9-2.6 μm TEM00 Output Beam Quality
Tunable Wavelength Range up to 500 nm*

* with a single set of optics

Mode of Operation CW, customer selected fixed wavelength CW tunable
Central Wavelength Range, μm*  1.9-3.0  1.9-2.6
Spectral Linewidth, MHz 0.5-10, typ. <1.0
Output Power**, W 0.2-5
Beam Waist Diameter*** (FW, 1/e2), mm  1.5 ± 0.5
Beam Divergence, mrad
0.2-0.5, typ. 0.3
Polarization Linear, Horizontal >100:1
Beam Quality, M2 <1.2, typ ≤1.1
Warm-up Time, min 15 from standby, 60 from cold start

* 500 nm continuous tuning with a single set of optics. Wavelength tuning range depends on central wavelength.
** Custom output powers are available upon request.
*** Beam diameter and divergence may be adjusted to meet customer specifications.

Pump Laser*
IPG Photonics ELR or TLR CW Fiber Laser
Pump Laser Dimensions (W × D × H), mm 448 × 403 × 132
Optical Head Dimensions (W × × H), mm 150 × 345 × 87
Supply Voltage, 50-60 Hz, VAC 110 - 220
Power Consumption**, W 200 typ.

* Pump laser model depends on the combination of parameters.
** Electrical power consumption depends on the maximum output power of the laser.

CL-SF and CLT-SF Datasheet


High Resolution Spectroscopy Environmental Monitoring
Free Space Communications Mid-IR OPO Pump Source
THz Generation by Difference Frequency Mixing Frequency Comb Generation


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