Vortex Plus TLB-6800


  • Magnetic damping and Star-Flex™ actuation for highest stability
  • Fiber coupled option
  • True mode-hop-free tuning
  • Narrow linewidth

The New Focus™ tunable external cavity diode lasers deliver true continuous mode-hop-free tuning. The Vortex Plus TLB-6800 is our highest performance precision finely tunable external cavity diode laser. The Littman-Metcalf cavity configuration provides exceptional stability, piezo mode-hop-free tuning range and narrow linewidth. The Vortex Plus uses Star-Flex, a motion actuation design like no other. Thermal and finite element analyses led us to the Star-Flex design that provides stiff, reproducible rotational motion without any translation.

The Vortex Plus includes an SMA port for direct to diode high speed current modulation. When ordering, please specify the exact center wavelength (to 10 pm) in vacuum. Part number includes complete laser system and the new TLB-6800-LN laser controller. Heads and controllers can also be sold separately.

The Model TLB-6800-LN laser controller is designed to operate with either the TLB-6800 Vortex Plus Tunable Lasers or TLB-7100 Vantage® Tunable Lasers. The controller allows you to easily fine tune and adjust the output power or bias current with the press of a button or via the USB/RS-232 interface with the click of a mouse. The TLB-6800-LN controller has an easy to access front panel controls with an included output to synchronize with other devices and features a built in function generator to control piezo sweeping.


Laser cooling
Atomic clocks
Quantum applications
ModelWavelength2Mode-Hope Free
Tuning Range
Output Power
Output Power
TLB-6802-455 455–457 nm >25 GHz (20 pm) 40 mW @ 455 nm N/A  
TLB-6802 459–461 nm >25 GHz (20 pm) 40 mW @ 461 nm N/A  
TLB-6804 632.5–640 nm >120 GHz (160 pm) 8 mW @ 638 nm 3 mW @ 638 nm  
TLB-6811 725–741 nm >100 GHz (200 pm) 20 mW @ 737 nm 10 mW @ 737 nm  
TLB-6813 765–781 nm >100 GHz (200 pm) 70 mW @780 nm 35 mW @ 780 nm  
TLB-6814 794–810 nm >100 GHz (210 pm 30 mW @795 nm 15 mW @795 nm  
TLB-6817 838–853 nm >90 GHz (220 pm N/A3 15 mW @ 852 nm  
TLB-6818 890–940 nm >90 GHz (240 pm) 30 mW @ 895 nm 15 mW @ 895 nm  
TLB-6820 940–990 nm >80 GHz (250 pm) 25 mW @965 nm 12.5 mW @ 965 nm  
TLB-6821 1030–1085 nm >60 GHz (230 pm) 70 mW @1064 nm 24.5 mW @1064 nm  
TLB-6825 1400–1490 nm >60 GHz (400 pm) 30 mW @1400 nm 10 mW @ 1110 nm  
TLB-6828 1520–1630 nm >50 GHz (400 pm) 30 mW @1550 nm 15 mW @1550 nm  
Linewidth <200 kHz (50 ms integration time)   
Wavelength Stability 2 pm (over 1 hour ±2⁰C)  
Power Stability <1% (over 1 hour ±2⁰C)  
Fine Tuning Resolution 0.01% of full PZT tuning range  
Fine-Frequency Modulation Bandwidth 

>100 Hz (100% amplitude)
>1.5 kHz (20% amplitude)

Current Modulation Bandwidth

DC-1 MHz (through controller)
50 kHz–100 MHz (directly to diode)5

Longitudinal Mode Single  
Transverse Mode TEM00  
Beam Pointing Stability <50 µrad (±2⁰C)  
Beam Size, typical 1-2 mm  
Beam Ellipticity, typical 1:1-2:1  
Polarization6 Vertical  
Optical Output7 Free-space, optically-isolated, fiber-coupled  
User Interface Controller front panel, RS232, USB  
Power Supply Requirement 100-240 VAC (50-60 Hz), power consumption <170 W
Environment Temperature, operating 15-30⁰C  
Environment Temperature, storage 0-50⁰C  
Environment Humidity Non-condensing  

1. Due to our continuous product improvement program, specifications are subject to change without notice.
2. Fine tuning only.  Select wavelength to 0.01 nm in vaccum.  Contact us for all available wavelengths.
3. Contact us for TLB-6817 free-space power.
4. Resolution is 10 mV in PZT (0.01% of full PZT tuning range) through controller front panel or command.  When tuning PZT using an external voltage source
    through External Fre-quency Modulation input, resolution is dependent on voltage source.
5. Current modulation directly to diode through laser head SMA port.
6. Free space (without isolator) output is vertical linearly polarized with respect to laser head base.  Output with optical isolator is 45 degrees with respect to laser
    head base.
7. Optically-isolated option includes an integrated 35 dB optical isolator with approximately 75% power transmission.   Fiber-coupled option includes isolator and
    Panda-type PM fiber with FC/APC connector for laser output.  Wide-type alignment key aligned with the slow axis of the PM fiber.  This configuration is applicable
    to the input configuration for the VAMP™ tapered amplifier products.  Dual stage isolation, other fiber types and connectors available upon request.   Fiber couple
    and optically isolated options unavailable for TLB-6802-455 and TLB-6802.

Vortex Plus TLB-6800 Dimensions

Similar Products

Product Description
Vantage TLB-7100
Tunable External Cavity Diode Laser - Littrow

Supporting Products

Product Description
VAMP TA-7600
Tapered Amplifier
High-Speed Servo Controller
10 MHz Bandwidth