3900S

CW TUNABLE TI:SAPPHIRE LASER

Up to 3.5 W TEM₀₀ output for high-power applications
Tunable from 675 to 1100 nm
Computer-optimized Z-fold cavity for maximum power and ease of alignment
Etalon option available for narrow linewidth applications

3900S CW Tunable Ti:Sapphire Laser

The Spectra-Physics Model 3900S is a high-performance, tunable, solid state IR laser. It delivers tunable, CW output from 675 to 1100 nm in a low-cost package. Pumped with either an argon ion laser or 532 nm diode-pumped solid state laser, the Model 3900S solid state Ti:Sapphire laser produces up to 3.5 W of TEM00 output for the broadest range of IR applications.

Applications

Spectroscopy

Fiber laser research

Telecommunications research

Semiconductor studies

Output Characteristics¹


Average Power²	675 nm⁶	700 nm	790 nm	1000 nm	1050 nm⁷
Millennia eV 10 W	800 mW	1.2 W	2.2 W	500 mW	500 mW
Millennia eV 5 W	NA	600 mW	1.0 W	250 mW	NA

Tuning Range


Average Power²	675 nm⁶	700 nm	790 nm	1000 nm	1050 nm⁷
Broadband Optics	700–1000 nm
Optional X-Long Optics	950–1100 nm
Optional Blue Optics	675–750 nm

Linewidth Specifications


Average Power²	675 nm⁶	700 nm	790 nm	1000 nm	1050 nm⁷
Standard 3900S	<40 GHz
With Thin Etalon	<15 GHz
With Thin/Thick Etalon	<1 GHz

Stability


Average Power²	675 nm⁶	700 nm	790 nm	1000 nm	1050 nm⁷
Noise³	<1%
Power Drift⁴	<3%

Beam Characteristics


Average Power²	675 nm⁶	700 nm	790 nm	1000 nm	1050 nm⁷
Spatial Mode	TEMoo
Polarization	>100:1 Horizontal
Beam Diameter (1/e²)⁵	0.95 mm
Beam Divergence, full angle⁵	<1 mrad

1. Due to our continuous product improvement program, specifications may change without notice. Specifications only apply when the 3900S is pumped by a Spectra-Physics Millennia eV 10 W or 5 W pump laser.
2. Power specified using the appropriate pump laser
3. RMS, measured in a 10 Hz to 1 MHz bandwidth
4. For a 2-hour period after a 1 hour warm up and <±3°C temperature change
5. Specifications apply to operations at the peak wavelength
6. Using additional blue optics
7. Using additional x-long optics