KLS-201A Series

Standard-model wavelength-tunable diode laser with 0.1 nm setting resolution. Eight band options run from 1000 nm to 1680 nm, including 1 um-band coverage.

Technical overview

The KLS-201A is the standard benchtop tunable diode laser in Koshin Kogaku's KLS line, ordered in one of eight wavelength bands from the 1064 band (1000-1100 nm) through the U band (1620-1680 nm). Wavelength is set in 0.1 nm steps over a tunable range of 100 nm or more, with accuracy of +/-0.2 nm on the 1220 band and above. Typical linewidth is 50 kHz on the O to U bands, widening to 100 kHz on 1220 and 500 kHz on the 1064 and 1100 bands; typical RIN is -145 dB/Hz at 0 dBm. Output is on polarization-maintaining fiber with a 20 dB extinction ratio, and the unit adds a 270 Hz CHOP function, variable attenuation, internal low-frequency modulation, a beam shutter and GP-IB control.

Sources Measurement Laser Characterization Fiber Characterization Sensing

Features

Covers the 1064, 1100 and 1220 bands as well as O-band to U-band
0.1 nm wavelength setting resolution
Wavelength tunable range of 100 nm or more
High-purity, low-noise laser beam for high-dynamic-range spectral measurement
Low RIN, suited to noise figure (NF) measurement of optical fibre amplifiers such as EDFAs
Narrow spectrum linewidth with high short-term frequency stability, for optical beat measurement
Polarization extinction ratio of 20 dB or better with high polarization stability
Optical output power variable attenuation
CHOP function at 270 Hz
Internal low-frequency modulation with coherence control
Beam shutter
GP-IB interface for control from a PC or power meter

Specifications

Specifications
Parameter	Value
Wavelength range (model 1064)	1000-1100 nm
Wavelength range (model 1100)	1050-1150 nm
Wavelength range (model 1220)	1180-1270 nm
Wavelength range (model O)	1260-1370 nm
Wavelength range (model ES)	1400-1530 nm
Wavelength range (model SC)	1460-1570 nm
Wavelength range (model CL)	1525-1630 nm
Wavelength range (model U)	1620-1680 nm
Wavelength tunable range	≥100 nm
Optical output power (models 1064, 1100, 1220, O, ES, SC, CL)	≥+3.0 dBm
Optical output power (model U)	≥0 dBm
Higher output power	Output power can be increased depending on model (note *1 in the catalog)
Wavelength setting resolution	0.1 nm
Wavelength accuracy (models 1064, 1100)	≤±0.5 nm
Wavelength accuracy (models 1220, O, ES, SC, CL, U)	≤±0.2 nm
Spectrum linewidth, typical (models 1064, 1100)	≤500 kHz
Spectrum linewidth, typical (model 1220)	≤100 kHz
Spectrum linewidth, typical (models O, ES, SC, CL, U)	≤50 kHz
RIN, typical	≤-145 (at 0 dBm) dB/Hz
Optical output flatness (models 1064, 1100)	≤±0.5 dB
Optical output flatness (models 1220, O, ES, SC, CL, U)	≤±0.2 (APS: ON) dB
Optical output stability (models 1064, 1100)	≤±0.05 (60 minutes) dB
Optical output stability (models 1220, O, ES, SC, CL, U)	≤±0.03 (60 minutes) dB
Wavelength precision (models 1064, 1100)	≤±1.0 (60 minutes) pm
Wavelength precision (models 1220, O, ES, SC, CL, U)	≤±0.8 (60 minutes) pm
Optical output variation (attenuator)	Available (max. output power to -30 dB, setting resolution 0.01 dB)
Internal low frequency modulation	Available (coherence control function)
CHOP function	Available, 270 Hz
Beam shutter	Available
Output optical fiber	Polarization maintaining fiber
Polarization	Linear polarization, aligned to the direction of the connector key; extinction ratio ≥20 dB (typical)
External control interface	GP-IB
Dimensions (W x D x H)	340 x 450 x 145 (unit not stated by the manufacturer; assumed mm but NOT confirmed)
Operating temperature	10 to 35 degC
Accuracy guaranteed temperature	15 to 30 degC
Operating relative humidity	≤85 (no condensation) %
Storage temperature	-10 to +50 degC
Storage relative humidity	≤85 (no condensation) %
Laser safety classification	CLASS 1 LASER PRODUCT, IEC 60825-1: 2007