WIDE AND FINE TUNABLE
EXTERNAL CAVITY DIODE LASER
- True mode-hop-free wide tuning
- Exceptional stability with shock-proof and thermally insulated housing and magnetic damping technology
- Fiber coupled option with robust, permanent fiber coupling
- Easy-to-use wavelength control
New Focus™ tunable external cavity diodes lasers lead the market with high performance, delivering true continuous mode-hop-free tuning over wide wavelength ranges. The Velocity TLB-6700 is our premier tunable diode laser system offering both wide and fine wavelength scanning. The laser cavity housing is shock proof, thermally insulated with active temperature control, and incorporates our unique magnetic damping technology to provide higher power, stability, and narrow linewidths.
The fiber coupled option includes a robust, permanently fixed fiber port for optimal coupling efficiency maintained across the wavelength tuning range. Both the isolator and fiber coupling are integrated within the laser housing to ensure the highest power stability.
The Velocity is operated using the TLB-6700-LN controller designed with low-noise analog circuits. The laser head is recognized upon startup, and optimum temperature, maximum current limit, and tuning range are automatically set. Current limits and safety shutoff features ensure maximum diode lifetime.
Integrated wavelength monitoring allows adjustment to within 0.01 nm, and piezo fine tuning provides even finer sub-picometer precision. External control and frequency locking are possible via analog input ports, and operation in both manual and remotely programmed modes is accessed via a USB interface.
Tuning Range2 (Wide)
Tuning Range (Fine)
|TLB-6704||635-638 nm||>80 GHz (110 pm)||8 mW @ 638 nm||2.5 mW @ 638 nm||5 nm/s|
|TLB-6711||730-739 nm||>80 GHz (140 pm)||20 mW @ 737 nm||10 mW @ 737 nm||8 nm/s|
|TLB-6712||765-781 nm||>80 GHz (150 pm)||50 mW @ 780 nm||25 mW @ 780 nm||8 nm/s|
|TLB-6713||795-810 nm||>80 GHz (150 pm)||20 mW @ 795 nm||10 mW @ 795 nm||8 nm/s|
|TLB-6716||830-853 nm||>60 GHz (150 pm)||50 mW @ 850 nm||15 mW @ 850 nm||10 nm/s|
|TLB-6718||890-940 nm||>50 GHz (160 pm)||15 mW @ 890 nm||5 mW @ 890 nm||10 nm/s|
|TLB-6719||940-985 nm||>50 GHz (180 pm)||40 mW @ 980 nm||15 mW @ 980 nm||10 nm/s|
|TLB-6721||1030-1070 nm||>50 GHz (200 pm)||60 mW @ 1064 nm||20 mW @ 1064 nm||10 nm/s|
|TLB-6722||1045-1085 nm||>50 GHz (200 pm)||40 mW @ 1080 nm||14 mW @ 1080 nm||10 nm/s|
|TLB-6723||1070-1130 nm||>50 GHz (280 pm)||30 mW @ 1110 nm||10 mW @ 1110 nm||10 nm/s|
|TLB-6724||1270-1330 nm||>50 GHz (290 pm)||30 mW @ 1300 nm||15 mW @ 1300 nm||15 nm/s|
|TLB-6725||1390-1470 nm||>30 GHz (200 pm)||45 mW @ 1450 nm||22.5 mW @ 1450 nm||15 nm/s|
|TLB-6726||1420-1500 nm||>30 GHz (210 pm)||20 mW @ 1480 nm||10 mW @ 1480 nm||15 nm/s|
|TLB-6728||1520-1570 nm||>30 GHz (240 pm)||30 mW @ 1550 nm||15 mW @ 1550 nm||20 nm/s|
|TLB-6730||1550-1630 nm||>30 GHz (260 pm)||30 mW @ 1600 nm||15 mW @ 1600 nm||20 nm/s|
|TLB-6732||1700-1800 nm||>20 GHz (260 pm)||10 mW @ 1780 nm||**||20 nm/s|
|TLB-6736*||1975-2075 nm||>20 GHz (260 pm)||2 mW @ 2030 nm||**||20 nm/s|
|TLB-6740*||2350-2450 nm||>20 GHz (360 pm)||4 mW @ 2400 nm||**||20 nm/s|
* Constant current mode only
** Contact sales for more information
|Linewidth||<200 kHz (50 ms integration time) ;< 2.5 kHz (5 μs)|
|Wavelength Stability||2 pm (over 1 hour ±2⁰C)|
|Power Stability||<1% (over 1 hour ±2⁰C)|
|Wide Tuning Resolution||10 pm|
|Fine Tuning Resolution3||0.01% of full PZT tuning range|
|Fine-Frequency Modulation Bandwidth||>100 Hz (100% amplitude)
2 kHz (20% amplitude)
|Current Modulation Bandwidth||DC-1 MHz (through controller)
50 kHz-100 MHz (directly to diode)4
|Beam Pointing Stability||<50 µrad (±2⁰C)|
|Beam Size, typical||1-2 mm|
|Beam Ellipticity, typical||1:1-2:1|
|Optical Output6||Free-space, optically-isolated, fiber-coupled|
|User Interface||Controller front panel, USB|
|Power Supply Requirement||100-240 VAC (50-60 Hz), power consumption < 170 W|
|Environment Temperature, operating||15-30⁰C|
|Environment Temperature, storage||0-50⁰C|
1. Due to our continuous product improvement program, specifications are subject to change without notice.
2. Motorized wide tuning and PZT fine tuning. Contact us for other available wavelengths and typical tuning curves. Wide tuning is mode-hope-free in constant
current mode only.
3. Resolution is 10 mV in PZT (0.01% of full PZT tuning range) through controller front panel or command interface. When tuning PZT using an external voltage
source through External Frequency Modulation input, resolution is dependent on voltage source.
4. Current modulation directly to diode through laser head SMA port.
5. Free space (with and without isolator) output is vertically linearly polarized with respect to laser head base.
6. Optically-isolated option includes an integrated 35 dB optical isolator for free-space output with approximately 75% power transmission.
Fiber-coupled option includes isolator and permanently fixed Panda-type PM fiber with FC/APC connector for laser output.
Wide-type alignment key aligned with the slow axis of the PM fiber. Dual stage isolation, other fiber types and connectors available upon request.
Optically-isolated option unavailable for TLB-6732. Fiber coupled option unavailable for TLB-6732, TLB-6736, and TLB-6740.
Velocity TLB-6700 Dimensions