微型 BLM2-D系列-寬帶雙SLD光源模塊是強大的和非常寛帶寬的光源,它是基于兩個有略微差別中心波長的SLD的結合構成。
這些穩定、可靠、低噪聲的模塊擴展了D-系列臺式SLD寬帶光源的生產線,容許容易地集成成客戶系統,尤其是OEM的應用。微型BLM2-D系列是OCT和生物醫學成像、布拉格光柵和其它種類光學傳感以及要求寬光譜和非常短的相干長度的微型強光源模塊的大量其它應用的理想光源。
內置微型雙通道SLD電流和溫度控制器容許由前面板按鈕、外部TTL或經RS-232接口的PC接通或斷開SLD。
雖然為了獲得光譜寬度和輸出功率的最好結合每個SLD的工作參數是預先設定的,但本公司可以根據要求提供一個密碼鑰匙容許經RS-232接口改變SLD的參數。
BLM2-D模塊基板的特征是把安裝設置納入其中,從基板延伸。這些安裝設置容許容易固定 BLM2-D光源模塊到一個熱沉上,獲得最寬的可能的環境工作范圍。不用熱沉使用BLM2-D光源模塊也是可能的,然而這將限定最大環境工作溫度到+40°C。
這個技術說明描述了本公司提供的標準模塊。無論如何,這個靈活的光源設計和大量一體化有效的不同的SLD模塊容許設計大量定制的光源,包括雙波長光源,其中具有不重疊光譜不同譜帶的SLD被結合在一起。
特征:
• High optical power
• Very broad emission spectra
• Coherence length* of 4.5 μm or less (in air)
• Miniature design
• Stable, low noise optical output
• Built-in dual-channel current and temperature controller with a lot of built-in SLD protection features
• Manual and remote control capability; RS-232 and TTL analog control
• Operates from +5V DC supply
應用:
• Optical Coherence Tomography, including Ultra High Resolution OCT systems
• Fiber Optic Sensing
• Optical Metrology
• Testing of Optical Components
• Biomedical Imaging
• Low-Coherence Interferometry
*coherence length is defined as full width at half maximum of the coherence function plotted versus mirror displacement.
技術指標
Parameter |
Condition |
Min |
Typ |
Max |
Unit |
Storage temperature |
|
-20 |
- |
+80 |
oC |
Operating temperature |
BLM2-D mounted on a heatsink capable of dissipating up to15 W
|
0 |
- |
+551 |
oC |
Humidity, non-condensing |
|
- |
- |
90 |
% RH |
DC supply voltage |
|
4.76 |
5.00 |
5.25 |
V |
DC supply current2 |
|
2 |
- |
3.5 |
A |
DC supply ripples |
1 kHz…200 kHz frequency range |
- |
- |
20 |
mV |
“INTERNAL MODE SWITCH” input |
Pin 1 connector “Control” |
4 |
5 |
30 |
V |
“SLD ON/OFF” input |
Pin 2 connector “Control” |
4 |
5 |
30 |
V |
ALARM output |
Pin 3 connector “Control”; open collector |
- |
- |
150 |
mA |
1 Light source modules must be fixed onto an appropriate heatsink for getting a widest possible operating temperature range. However, it is also possible to use
BLM2-D without a heatsink, although in a limited range of ambient temperatures. The highest operating temperature without heatsinking is +40 °C in case of a free
air circulation around the package.
2 DC power supply should be capable to produce up to 3.5A. A less powerful power supply may be used, but it will limit the operating temperature range. It is not
allowed to use a power supply with a maximum current of less than 2.0 A.
光學參數
Device P/N |
BLM2-D-810-B-5 |
BLM2-D-840-B-10 |
BLM2-D-880-B-10 |
Parameter |
Min |
Typ |
Max |
Min |
Typ |
Max |
Min |
Typ |
Max |
Output optical power, mW |
5 |
7 |
- |
10 |
12 |
- |
8 |
10 |
- |
Center wavelength, nm |
800 |
810 |
820 |
830 |
840 |
850 |
870 |
880 |
890 |
Spectral bandwidth (FWHM), nm |
90 |
100 |
- |
90 |
100 |
- |
90 |
100 |
- |
Spectral Flatness, % |
- |
- |
45 |
- |
- |
45 |
- |
- |
30 |
Spectral ripple, % |
- |
2 |
5 |
- |
2 |
5 |
- |
2 |
5 |
|