The new Integral lasers offer extremely narrow linewidths on
an OEM-ready platform designed for stability and longevity. This
latest addition to our market-leading line of external-cavity diode
lasers offers single longitudinal mode performance at a single,
fixed wavelength. The user may choose the output wavelength
anywhere within a specified wavelength range and the factory
will build the laser at that precise wavelength. Long-term wavelength
and power stability will make this laser a miniature work
horse. With a footprint that is smaller than a business card, the
Integral lasers will fit in most instrument designs with room to
spare. We have carefully designed the Integral lasers to operate
continuously on a single longitudinal mode without mode hops
and minimal frequency drift as the heart of any imaging, metrology,
or spectroscopic measurements.

Specifications

Nominal Wavelength 633 nm 660 nm 780, 785 n
Nominal Wavelength 633 nm 660 nm 780, 785 nm
Minimum Free-Space Power(1) 8 mW 20 mW 70 mW
Power Stability (p-p) <2% <2% <2%
Available Wavelengths(2) 630–635 nm 650–660 nm 765–785 nm
Linewidth <200 kHz <200 kHz <200 kHz
Center Wavelength Stability(3) ±1.5 pm ±1.5 pm ±1.5 pm
Wavelength Selectability 50 pm 50 pm 50 pm
ASE(4) < –65 dBc < –65 dBc < –65 dBc
Side Mode Suppression Ratio(5) < –50 dBc < –50 dBc < –50 dBc
Lifetime (Operating Hours) >5000 hrs >5000 hrs >6000 hrs
Head Dimensions 2.5" x 1.25" x 1.25" 2.5" x 1.25" x 1.25" 2.5" x 1.25" x 1.25"
Operating Temperature Range 15 to 35 °C 15 to 35 °C 15 to 35 °C
Storage Temperature Range –20 to +60 °C –20 to +60 °C –20 to +60 °C
Model # SWL-7504 SWL-7505 SWL-7513


(1) At nominal wavelength; for other powers in wavelength range, contact factory.
(2) User selectable, factory set.
(3)Over 12-hour period with temperature maintained in a ±3 °C window.
(4)Maximum, measured with 0.1-nm resolution.
(5)Ratio of power within 12 GHz of primary mode to that in primary mode.

SWL-7500 Integral™
Single-Wavelength Lasers

• Exceptional wavelength and power stability
• All solid-state with a tiny footprint
• Factory set wavelengths
- 633, 660, 780, 785 nm
- Custom wavelengths upon request
• Rugged, OEM-ready

Highly stable cavity design yields extremely low
wavelength drift

Long-term side mode suppression ratio measurement
- No single-mode drop outs
- High ASE rejection 

Applications
• Raman imaging & spectroscopy
• Interferometry
• Data encryption
• Fiber gyroscopes
• LIDAR
• Terahertz generation