A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the STANFORD RESEARCH SYSTEMS LDC500 Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.

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   STANFORD RESEARCH SYSTEMS LDC500   Description / Specification:    
STANFORD RESEARCH SYSTEMS LDC500 100 mA Laser Diode Controller

The SRS LDC500 Laser Diode Controller is an ideal instrument for controlling the current and temperature of your laser diodes. It has the performance and features you expect from instruments costing twice as much. The LDC500 has up to 100 mA of output current with less than 0.3 µA of rms noise. The SRS LDC500 is a 36 W high-precision temperature controller with standard computer interfaces, including Ethernet. It has multiple laser diode protection features, including slow start turn-on, adjustable current limits, and adjustable compliance voltage. Specifications. Current Source Range: 0 to 100 mA, 0 to 50 mA. Setpoint resolution: 1 µA. Accuracy: ±0.02 % of full scale. Output impedance: >1 M-ohm (DC). Thermal Stability: <10 ppm/°C. Noise (10 Hz to 1 MHz): 0.9 µA rms (high range / high BW), 0.9 µA rms (high range / low BW), 0.5 µA rms (low range / high BW), 0.3 µA rms (low range / low BW). Compliance voltage Range: 0 to 10 V, programmable. Resolution: 10 mV. Accuracy: 0.2 V. Monitor Photodiode Bias voltage: 0 to 5 V, programmable. PD current range: 0 to 5,000 µA. Temperature Control range: IC sensor -55 °C to +150 °C, Resistor sensor -150 °C to +250 °C (10 ohm to 500 k-ohm). Setpoint resolution Temperature: 0.001 °C. TEC Output Source type: Linear, bipolar current source. Current range: -4.5 A to +4.5 A.


Standard Calibration $285.00 *
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*This is a Web introductory price for one calibration of the STANFORD RESEARCH SYSTEMS LDC500. Price does not in most cases include measurement performance data. Pricing does include NIST traceable calibration and issue of a calibration certificate and calibration label. Pricing may vary slightly due to volume and location of laboratory supporting calibration. Volume pricing may apply. On-site fees may apply depending on logistics, location and volume of work to be completed during the visit.

Related Optical Terms and Definitions. For a complete list go to our  Terms and Definitions Page.

Bandwidth is the difference between the upper and lower frequencies in a contiguous set of frequencies within which a fiber optic component, link or network will operate.

Extinction Ratio (ER)
Extinction Ratio is the ratio of two optical power levels, of a digital signal generated by an optical source, (example a laser diode), where P1 is the optical power level generated when the light source is "on," and P0 is the power level generated when the light source is "off." The extinction ratio may be expressed as a fraction, in dB, or as a percentage.

Optical Signal-to-noise Ratio (OSNR)
Optical Signal-to-noise ratio is the ratio between the signal power and the noise power in a given bandwidth. Most commonly a reference bandwidth of 0.1 nm is used. This bandwidth is independent from the modulation format, the frequency and the receiver. For instance a OSNR of 20dB/0.1nm could be given, even the signal of 40 GBit DPSK would not fit in this bandwidth. OSNR is measured with a Optical Spectrum Analyzer. It is generally measured at the wavelength of interest.

Repeatability is the variation in a number of repeated measured quantities when measurement conditions are changed and restored. The value corresponds to half the spread between the minimum and maximum value measured.

Wavelength Repeatability
Wavelength Repeatability is the random uncertainty in reproducing a wavelength after detuning and re-setting the wavelength. The wavelength repeatability is ± half the span between the maximum and the minimum value of all actual values of these wavelengths. Example test condition: uninterrupted TLS output power, constant power level, temperature within operating temperature range, coherence control off, short time span. Note: NOTE The long-term wavelength repeatability can be obtained by taken the wavelength repeatability and wavelength stability into account.

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