Precision Electro-Optic and Laser Technologies

D2-100-DBR Laser Module

Contact Vescent

Features:

  • Up to 100 mW at 780 nm
  • Up to 170 mW at 852 and 895 nm
  • 767 and 770 nm for Potassium spectroscopy
  • Now available at 760 nm!
  • Highly Vibration Insensitive: No Moving Parts or Piezos
  • 40 GHz Mode Hop-Free Tuning via High Bandwidth Injection Current
  • Includes Optical Isolation & Anamorphic Prisms for beam conditioning

                                                                                        

The D2-100-DBR laser module provides a highly agile, mechanically robust laser in a 4×4 inch footprint. Included are a distributed Bragg reflector (DBR) laser diode packaged in a precision temperature-controlled module with beam conditioning optics (anamorphic prism pair) and a 35 dB optical isolator. DBR laser diodes are fabricated with the feedback grating patterned directly adjacent to the gain section of the diode. They are highly insensitive to vibrations and, by virtue of a short (~ 1 mm) cavity, can be current tuned over more than 40 GHz mode hop-free.  As a result, the laser is capable of fast servo control with the D2-125 Reconfigurable Servo or other loop filters for easy locking to atomic and molecular transitions.  Moreover, the module contains no moving parts or piezo-electrics and is therefore inherently robust and rugged. The laser diode output is collimated with a 0.55 NA lens mounted to a movable plate for pointing adjustments.

DBR lasers have 2-3 times larger temperature and current tuning coefficients than external-cavity diode lasers (ECDLs). We precisely control this agility by employing two stages of temperature control and driving the injection current with a precision, D2-105 Low-noise Current Controller with fast servo input.  Therefore, D2-100 lasers respond faster to environmental challenges than conventional ECDLs.

And we are proud to introduce a high-power version of this widely used, versatile laser.  Now we offer over 100 mW of tunable light at 780.24 nm covering the D2 transitions of Rubidium and 170 mW at 852 nm for the D2 lines of Cesium.

These lasers are designed to be current- and temperature-stabilized and locked to atomic transitions.  The D2-125 Reconfigurable Servo can tightly lock the D2-100 series lasers, reducing linewidth and eliminating frequency drift.  The D2-210 Spectroscopy Modulecan supply the saturated absorption signal that serves as the frequency reference for locking.  A second D2-100 laser can be offset phase locked to a master laser using the D2-135 Offset Phase Lock Servo.

View a typical configuration of a D2-125 servoing a D2-100-DBR laser.

Specifications
Minimum Typical Maximum Units
Available Center Wavelengths 760, 767, 770, 780, 795, 852, 895, 920, 976, 1064, 1083 nm
Center Wavelength Accuracy on transition for K, Rb & Cs, ask for other λs
Tuning
Temperature 1.5 nm
Injection Current (Mode Hop-Free) 35 40 50 GHz
Linewidth 0.5 1.0 1.0 MHz
Output Power (std. model)1 767 & 770 nm
780, 795, 852, 895 nm
25
40
mW
Output Power (high-power model -HP1) 780 & 795 nm
852 & 895 nm
100
170
mW
Polarization Horizontal
Standard-power Head Dimensions 3.75 x 3.975 x 1.7 (l x w x h) inches
High-power Head Dimensions 5.69 x 3.975 x 1.7 (l x w x h) inches
Free-space Beam Height 0.95 inches

1Contact factory for powers at other wavelengths