THORLABS LFL1900 Thulium-Doped Fiber Lasers (1900 ± 2 nm)

Emission Wavelength: 1900 ± 2 nm

Output Power at Maximum Drive Current(a): ≥30 mW

RMS Linewidth: 200 pm (Max)

Drive Current: 450 mA (Max)

Polarization: Random

Power Stability (Ambient Temperature ±2 °C): <±2% Over 24 Hours (After 15 min Warm Up)

Relative Intensity Noise (RMS, 10 Hz - 1 MHz)(a): <0.5%

Output Fiber Type: SM2000

Output Fiber Mode Field Diameter: 13 ± 1 µm @ 1996 nm

Output Fiber NA: 0.11

Output Fiber Connector: 2.0 mm Narrow Key FC/APC

Electrical

AC Input: 100 - 240 VAC, 50 - 60 Hz

Input Power: 20 VA (Max)

Fuse Ratings: 500 mA

Fuse Type: IEC60127-2/III (250 VA, Slow Blow Type "T")

Fuse Size: 5 mm x 20 mm

Physical

Dimensions: (W x H x D) 5.77" x 3.07" x 12.17" (146.5 mm x 77.9 mm x 309.1 mm)

Weight: 1.96 kg (4.32 lbs) 4.13 kg (9.1 lbs) Shipping Weight

Operating Temperature: 15 to 35°C

Storage Temperature: 0 to 50°C

Connections and Controls

Interface Control: Optical Encoder with Pushbutton

Enable Select: Keypad Switch Enable with LED Indicator

Power On: Key Switch

Display: LCD, 16 x 2, Alphanumeric Characters

Input Power: Connection IEC Connector

Interlock: 2.5 mm Mono Phono Jack

Communications

Communications Port: USB 2.0 Compatible

COM Connection: USB Type B Connector

Required Cable: 2 m USB Type A to Type B Cable (Replacement Item # USB-A-79)

(a) The output power is specified at the fiber bulkhead for the emission wavelength.

(b) Multiple longitudinal modes exist within the linewidth of the laser that are separated by more than 100 MHz. The beating between these modes can create additional noise at frequencies >100 MHz.